Geography has a profound effect on where civilizations settle. The earliest civilizations resided within river valleys, and used the area around them to create opportunities to benefit their growth. Mountains, rivers, and plateaus provided natural defenses, at the cost of movement and trade.
Answer:
(C.) Trans-Saharan trade routes were primarily land based; the Silk Road was both land and sea based
Explanation:
The best known statement of the theory of nullification during this period was said by John C. Calhoun
Their goal was the removal of foreign influence from China.
