Which river was not a home to a major civilization?

Where did washington’s army spend a harsh and difficult winter in 1777–1778?

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?

What are some incentives that parties have to carry out their campaign promises?