Step 1 : Introduction to the question "Which nation's athletes enter first at an Olympic Opening Ceremony?"
...The Olympic Games held in Amsterdam in 1928 marked the beginning of a new tradition that remains to this day: the Olympians of Greece enter the Olympic stadium first and the host nation's Olympians bring up the rear of the processional. The other participating nations follow the alphabetical order of the host nation's native language. Each nation's delegation chooses an athlete to do the honor of carrying their country's flag into the Olympic Stadium. Source: NBCOlympics.com