What was the significance of the Homestead Act (1862)?

During the revolutionary war what was the definition of loyalist

Mid to high level clouds that look like layered blankets are called

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?