Here is a Cultural Literacy worksheet on George III. This is a half-page worksheet with a reading of four sentences and three short comprehension questions.
In other words, this is a short and basic, though, it is worth mentioning, well-balanced, introduction to the monarch whom Thomas Jefferson, the principal author of the United States Declaration of Independence, accused in that document of, among many other things, refusing “…his Assent to Laws, the most wholesome and necessary for the public good.”
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.