What were the causes of the growing fear of communism, and why was Senator Joseph McCarthy able to become so powerful?

What was gained through the gadsden purchase

Why did the other allies like great britain and france not support wilsons 14 points?

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?