Answer:
From 1861 to 1900, the Civil War fostered a great deal of economic change in the United States. During this period, the economic change most fostered by the Civil War included (1) an end to slavery; (2) an increase in the need for cheap labor to work in the factories; and (3) an increase in railroad building.
Explanation:
B. The president signs a treaty with Mexico.
Answer:
The peninsula plays a critical geopolitical role in the Arab world due to its vast reserves of oil and natural gas. Before the modern era, it was divided into four distinct regions: Red Sea Coast (Tihamah), Central Plateau (Al-Yamama), Indian Ocean Coast (Hadhramaut) and Persian Gulf Coast (Al-Bahrain).
Explanation:
A. It became a trading center due to its location and size.
