Answer:
Economic, political, and social issues merge with circumstances of modernization to make people want to migrate from rural to urban areas.
Explanation:
Answer:
transportation
Explanation
without trains, cars or even good old horseback we would not be able to disperse trade goods or necessities such as food and medical supplies to others
The Columbian Exchange was when the old world (Europe) trade with the new world (America) items. for example: Old World had horses. So if Europe never came to America... we wouldn't have them. Or new world had tomatoes. If Europe didn't have tomatoes... We wouldn't have pizza or delicious Italian goods.
I'm not sure what yours asking, but The Space Shuttle<span> Challenger broke apart 73 seconds into its tenth mission on January 28, 1986. </span>
