Explanation of First Amendment rights (this channel has a multitude of history/civics related topics covered in ASL)
Middle-HS Level
This youtube channel contains various court related sign terminology such as: appeal, lawsuit, supreme court, court of law, criminal law, civil law, defendant, equal protection clause, judge, verdict, lawyer, plaintiff etc.
Trans Atlantic Slave Trade, Missouri Compromise, Compromise of 1850
Summary of events leading up to the Revolutionary War (stamp act, quartering, etc.)