Answer:
States gained a large piece of western land know as the Mexican session cession.
Answer:
Virginia
Explanation:
Most of the battles in the Eastern Theater of the Civil War took place in Virginia because the Confederacy had to defend its national capital at Richmond. By the time General Robert E. Lee surrendered in 1865, much of the state had been ravaged by war.
Advantages:
Natural barriers
Powerful empire
Protection from enemies
Resources
Disadvantages:
Living in tall mountain range
Elevation sickness
Traveling is dangerous
Al-Khwarizmi developed algebra.