"<span>D. the Circus Maximus</span>" is the correct answer. The Circus (which is not at all like the present day definition of a circus) was the only venue fitted with race tracks for the horses.
If the ottomans did not capture Constantinople the Europeans would've NOT try to find different trade routes which would lead to the Americas not being found, and which would also lead with some parts of Africa left alone.
Thanks for asking.
Andrew Jackson
President Andrew Jackson championed Jacksonian democracy
where he called for more democracy in American government by championing for
greater rights for the common man. He was opposed to any signs of aristocracy
in the country. His views became dominant for a generation to follow.
"<span>Nomads were people who moved in search of food, while hunter-gatherers got food by gathering wild food sources and hunting" would be the best option from the list, since the Neolithic Revolution brought about a shift to agriculture. </span>