8. Which of the following was NOT a main crop during the Middle Ages?
A. Corn
B. Wheat
C. Barley
D. Oats

Corn

Explanation:

Most of the people living on the manor were peasant farmers or serfs who grew crops for themselves, and either labored for the lord and church or paid rent for their land. Barley and wheat were the most important crops in most European regions; oats and rye were also grown, along with a variety of vegetables and fruits.

ummm? is that supposed to be a question or a but this is a reason he won re-election

explanation:

"despite progress in the war, lincoln and most political pundits were convinced that he would lose his bid for reelection in 1864. the country was war weary and the democratic party's nominee, george mcclellan, was likely to negotiate a peace treaty with the confederacy if elected." - loc.gov

these civilizations were located around fertile rivers, where they could produce an abundance of crops