The Spanish transferred the smallpox disease from themselves to the Aztecs by being around them and the Aztecs didn't have any immunity to the diseases that the Spanish brought over, so 75% of them died from the diseases.
Hope that helps.
The need to raise money to maintain expensive political campaigns diminishes ties to a representative democracy because of the influence large contributors have over politicians. ... (such as specific legislation being enacted or defeated), so some have come to equate campaign finance with political corruption and bribery.
Mesopotamia was the name given to the region that is located near the Tigris and Euphrates river system in modern day Iraq and Syria. This region is also known as "land of rivers", "land between two-rivers," or also the "cradle or bread basket of civilization."