[Answer] What is the name of the land bridge that once connected Asia and North America?

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...1. Beringia 2. Isthmus of Panama 3. Sinai Peninsula 4. Doggerland

Step 2 : Answer to the question "What is the name of the land bridge that once connected Asia and North America?"

Beringia - The hypothesis that Asia and North America were once connected by a land bridge dates back to 1590 when it was proposed by Spanish missionary Fray Jose de Acosta. It was not until the 20th century that a complex array of geological and paleontological evidence led to the conclusion that the Bering Strait between Russia and Alaska was indeed dry land at several points. Due to extensive glaciation, sea levels dropped by as much as 400 feet during the Pleistocene epoch, exposing land that connected the two continents. Though the term "bridge" would seem to imply a relatively narrow strip of land, Beringia was, in fact, up to 1,000 miles wide at certain points in time. With the recession of the glaciers at the end of the Pleistocene, a stretch between the two landmasses was again covered by water. Whether humans arrived in North America by way of Beringia or not is still a matter of debate, with some scientists contending that it is more likely that they traveled by boat instead. :

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