Answer:
<em>New food and fiber crops were introduced to Eurasia and Africa, improving diets and fomenting trade there. In addition, the Columbian Exchange vastly expanded the scope of production of some popular drugs, bringing the pleasures — and consequences — of coffee, sugar, and tobacco use to many millions of people.</em>
Answer:
D
Explanation:
They separated schools and public transportation first
I believe the answer you are looking for is B<span />
Three of the mentioned events happened in the last (20th) centuty: Nafta went into effect in1994, Panama regained control over the Canal in 1970s and Fidel Castro was is still alive.
The event that came first was the following one: <span>(2) Simón Bolívar established Gran Colombia.
It happened in the 19th century. </span>
D.it made people switch from hunting to herding. People didn't have to move around from place to place anymore. They could finally settle down and have a life.