This is the assessment I use for my westward expansion unit. This is based off of fourth grade standards. The test includes multiple choice, matching, short answer, and constructed response questions. (This could also be used as a study guide, if desired.)
These items cover:
~Important People (Truth, Stanton, Tubman)
~Inventions (telegraph, steamboat, locomotive)
~Major events (War of 1812, Texas Annexation, Mexican Cession, Louisiana Purchase, Oregon Territory, California Gold Rush)
~Battle of the Alamo
~Map of the westward progression
I hope you find these items useful for you and your class. Please let me know if you have any questions. Thank you!