Answer: A peninsula is a piece of land that is surrounded by water on three sides. An example of a peninsula is the Arabian Peninsula in Saudi Arabia. This peninsula boarders the Red Sea, Gulf of Aden, Arabian Sea, Gulf of Oman and Persian Gulf. That seems like a lot of bodies of water but they only surround 3 sides of the peninsula.
An isthmus is a narrow strip of land connecting two larger land areas, usually with water on either side. A peninsula is a piece of land that is almost surrounded by water but connected to mainland. So a peninsula is often defined as land surrounded by water on three sides.
The southern economy remained largely agricultural mainly due to agriculture's importance to the colonies as a trade export (especially cotton, tobacco, and other cash crops).
Militia maybe. A militia is a military force that is raised from the civil population to supplement a regular army in an emergency. It is made up of a group of volunteers.
Because people during the reconstruction were fighting due to slavery (the civil war) or the rights of african americans. The civil right movement was like a continuation or amendment of that reconstruction era to guarantee people of all races the same rights and abolish racial segregation; this actually never came to light when slavery was abolished and the reconstruction era ended.