Option: B. the legendary "Seven Cities of Cibola."
Explanation:
Francisco Vásquez de Coronado was an explorer from Spain in the 16th century, known for expeditions in Southwest of America. Coronado went to look for seven golden cities after learning the tale of riches with it among the Spaniards in Mexico. Coronado assembled 400 soldiers and 1500 Indians and set out for an excursion to find the treasure (gold), to have existed in Mexico. He found the seven cities of Cibola with no riches.
On May 17, 1954, the Court stripped away constitutional sanctions for segregation by race, and made equal opportunity in education the law of the land.
Because it was the first big group of people who had one leader, always lived in a concrete place. Also they invented lots of new things that was more complex than those things who were invented before
