OK, here is an Everyday Edit worksheet, “Columbus Sets Sail,” which serves, I think, as a pretty good introduction to how Hispanic History begins.
Incidentally, if you, or more importantly, your students, like this kind of exercise, the good people at Education World give away a year-long supply of them at no charge. Just click on the hyperlink in the previous sentence to get to them.
If you find typos in this document…well, that’s the point of it. Ask your students to correct them.