Which of the following is the main cause of global warming
a. rising sea levels
b. increase in solar radiation
c. release of chlorofluorocarbons into the atmosphere
d. buildup of carbon dioxide in the atmosphere

Arguments supporting and opposing the supreme court decision citizens united v. federal election commission identify two reasons why some supporters of the decision consider it a victory for free speech.

Plz which of the following statements about life in europe during the middle ages is not accurate. a. by the middle ages the only unifying factor in europe was christianity. b. most people lived in rural areas and worked on farms. c. priest, monks and church officials were virtually the only people in europe who could read and write d. most people lived in cities or towns and worked as skilled artis most people lived in cities or towns and worked as skilled artisans.

Why did federalists fear the louisiana purchase? what did they think would happen?