How did the crusades contribute to trade and learning

The contribution of the Crusades was that trade increased as Europeans traveled and became more familiar with exotic goods. Increased contact and trade was part of the reason for the rise of towns and cities in western Europe, starting in Italy. There teachings of Christianism and war tactics contribute to the crusaders.

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

b) the confederacy had to pay all union war expenses.