What challenges did homesteaders have when settling the great plains region of the west

2. what was the estimated population of ancient copán? of ancient tikal?

Ineeed the answer asap which of the following describes the link between u. s. foreign policy and the rise of islamic extremist leaders in afghanistan during the late 20th century? apex

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?