[Answer] What structure on the South African coast has a range of 63 km and releases flashes every 30 seconds?

Step 1 : Introduction to the question "What structure on the South African coast has a range of 63 km and releases flashes every 30 seconds?"

...Hint :Beam

[Answer] 2. What structure, developed by Romans, revolutionized the way that society lived by bringing running water into cities?

Step 1 : Introduction to the question "2. What structure, developed by Romans, revolutionized the way that society lived by bringing running water into cities?"

...1. Forum 2. Aqueducts 3. Hadrian's Wall 4. Roman roads Contrary to a widespread misconception, the aqueduct was *not* a Roman invention, but they developed it and made extensive use of it. Aqueducts were used to bring water into their cities. This allowed for public bath houses which were a staple of the Roman Empire as well as some private bathing facilities for the more affluent households. Many can still be seen to this day in Western Europe.

[Ans] In 1884, what did P.T. Barnum lead across the Brooklyn Bridge to prove that the structure was safe?

Step 1 : Introduction to the question "In 1884, what did P.T. Barnum lead across the Brooklyn Bridge to prove that the structure was safe?"

On this day in 1883, The Brooklyn Bridge, linking Brooklyn and Manhattan, was opened to traffic for the first time. To test out the bridge, P.T. Barnum offered, he’d walk his troupe of elephants across it. On May 17, 1884, P.T. Barnum’s 21 elephants, including his star, Jumbo, crossed on foot from Manhattan to a circus showground in Brooklyn. The march of the circus animals across the bridge became an annual springtime ritual. It was a demonstration to the public that the bridge was safe and a brilliant promotional stunt for Barnum’s touring show.

[Answer] In 1884, what did P.T. Barnum lead across the Brooklyn Bridge to prove that the structure was safe?

Step 1 : Introduction to the question "In 1884, what did P.T. Barnum lead across the Brooklyn Bridge to prove that the structure was safe?"

...On this day in 1883, The Brooklyn Bridge, linking Brooklyn and Manhattan, was opened to traffic for the first time. To test out the bridge, P.T. Barnum offered, he’d walk his troupe of elephants across it. On May 17, 1884, P.T. Barnum’s 21 elephants, including his star, Jumbo, crossed on foot from Manhattan to a circus showground in Brooklyn. The march of the circus animals across the bridge became an annual springtime ritual. It was a demonstration to the public that the bridge was safe and a brilliant promotional stunt for Barnum’s touring show.

[Answer] 6. This novel can be difficult for English-speakers to read because of the structure and usage of the characters' Russian names. Which lengthy novel set during the Napoleonic Wars can be a literary nemesis?

Step 1 : Introduction to the question "6. This novel can be difficult for English-speakers to read because of the structure and usage of the characters' Russian names. Which lengthy novel set during the Napoleonic Wars can be a literary nemesis?"

...1. War and Peace 2. All Quiet on the Western Front 3. The Fountainhead 4. The Sun Also Rises Leo Tolstoy's "War and Peace" was published in 1869 after first being featured in serialized form in a magazine. It dealt with the impact of Napoleon's invasion of Russia, combining both history and fiction. At well over 1,000 pages, its length makes it a literary nemesis, as does the use of various forms of the Russian names. Additionally, the original Russian version contained passages in French, and some of the English translations have kept the French portions, making it difficult to read if one's knowledge of French is limited to "croissant".

[Answer] 2. Fascinated, Ella starts stacking her Legos, making one long structure that towers above the floor. Her dad walks in, sees her work, and smiles. He sings softly: "All in all, it's just another brick in the wall." What musical group immortalized this line?

Step 1 : Introduction to the question "2. Fascinated, Ella starts stacking her Legos, making one long structure that towers above the floor. Her dad walks in, sees her work, and smiles. He sings softly: "All in all, it's just another brick in the wall." What musical group immortalized this line?"

...1. Pink Floyd 2. Simon and Garfunkel 3. Queen 4. Ben Folds Five A song of defiance against the forces of conformity at school, Pink Floyd's "Another Brick in the Wall (Part II)" was first released as a single in 1979. The song hit the number one position on the UK Singles Chart and the US Billboard Hot 100, and was banned by South Africa's apartheid government when it was adopted as a protest song. After all, the song starts with the proud declaration, "We don't need no education / We don't need no thought control".

[Answer] largest brick structure in americas

Step 1 : Introduction to the question "largest brick structure in americas"

...According to Wikipedia: Doak Campbell Stadium is the largest continuous brick structure in the US. The Stanley Dock Tobacco Warehouse is a grade II listed building and is the world's largest brick warehouse. It is adjacent to the Stanley Dock, in Liverpool, England. Standing 125 feet (38 m) high, the building was, at the time of its construction in 1901, claimed to be the world's largest building in terms of area.

[Answer] Which monumental obelisk is the tallest structure in Washington D.C.?

Step 1 : Introduction to the question "Which monumental obelisk is the tallest structure in Washington D.C.?"

...The tallest structure in the capital city of Washington, D.C., excluding radio towers, is the Washington Monument, which rises 555 feet and was completed in 1884. Built to honor George Washington, the first President of the United States, the Washington Monument was once the tallest building in the world at just over 555 feet. The monument to America’s first president still holds the title of world’s tallest stone structure and obelisk. The Washington Monument is currently closed until spring 2019 for repairs that will modernize the elevator and increase long-term reliability and safety.

[Ans] Which monumental obelisk is the tallest structure in Washington D.C.?

Step 1 : Introduction to the question "Which monumental obelisk is the tallest structure in Washington D.C.?"

...
The Washington Monument is an obelisk on the National Mall in Washington, D.C., built to commemorate George Washington, once commander-in-chief of the Continental Army and the first President of the United States. Located almost due east of the Reflecting Pool and the Lincoln Memorial, the monument, made of marble, granite, and bluestone gneiss,is both the world's tallest stone structure and the world's tallest obelisk, standing 554 feet 7 11⁄32 inches (169.046 m) tall according to the National Geodetic Survey (measured 2013–14) or 555 feet 5 1⁄8 inches (169.294 m) tall according to the National Park Service (measured 1884). It is the tallest monumental column in the world if all are measured above their pedestrian entrances

[Answer] Which monumental obelisk is the tallest structure in Washington D.C.?

We have looked all around the web to find the most relevant answer to your query: 

Which monumental obelisk is the tallest structure in Washington D.C.?

• Washington Monument : ...The is an on the National Mall in , , built to It was the in the world from 1884 to 1889.

[Ans] Which historic structure was constructed in 1961?

Step 1 : Introduction to the question "Which historic structure was constructed in 1961?"

...The Berlin Wall was a guarded concrete barrier that physically and ideologically divided Berlin from 1961 to 1989. Constructed by the German Democratic Republic (GDR, East Germany), ... Construction started, 13 August 1961 ..... Construction of a new railway bypassing West Berlin, the Berlin outer ring, commenced in ... East Germany begins construction of the Berlin Wall - Aug 12, 1961 ... 
Construction of the wall caused a short-term crisis in U.S.-Soviet bloc ... the government of East Germany, on the night of August 12, 1961, began to seal off all ... Berlin Wall built - Aug 15, 1961 - 

 Two days after sealing off free passage between East and West Berlin with barbed wire, East German authorities begin building a wall--the Berlin Wall--to ..

[Ans] What is the world's longest man-made structure?

Step 1 : Introduction to the question "What is the world's longest man-made structure? "

Apart from defense, other purposes of the Great Wall have included border controls, allowing the imposition of duties on goods transported along the Silk Road, regulation or encouragement of trade and the control of immigration and emigration. Furthermore, the defensive characteristics of the Great Wall were enhanced by the construction of watch towers, troop barracks, garrison stations, signaling capabilities through the means of smoke or fire, and the fact that the path of the Great Wall also served as a transportation corridor. The Great Wall stretches from Dandong in the east to Lop Lake in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. A comprehensive archaeological survey, using advanced technologies, has concluded that the Ming walls measure 8,850 km (5,500 mi). This is made up of 6,259 km (3,889 mi) sections of actual wall, 359 km (223 mi) of trenches and 2,232 km (1,387 mi) of natural defensive barriers such as hills and rivers. Another archaeological survey found that the entire wall with all of its branches measure out to be 21,196 km (13,171 mi). Today, the Great Wall is generally recognized as one of the most impressive architectural feats in history.

Step 2 : Answer to the question "What is the world's longest man-made structure? "

Great wall of China:

The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger and stronger, are collectively referred to as the Great Wall. Especially famous is the wall built in 220–206 BC by Qin Shi Huang, the first Emperor of China. Little of that wall remains. The Great Wall has been rebuilt, maintained, and enhanced over various dynasties; the majority of the existing wall is from the Ming Dynasty (1368–1644).

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[Ans] the efficient data structure to insert/delete a number in a stored set of numbers is?

Step 1 : Introduction to the question "the efficient data structure to insert/delete a number in a stored set of numbers is"

Each node contains two fields, called links, that are references to the previous and to the next node in the sequence of nodes. The beginning and ending nodes' previous and next links, respectively, point to some kind of terminator, typically a sentinel node or null, to facilitate traversal of the list. If there is only one sentinel node, then the list is circularly linked via the sentinel nod