Need to pass History please help :(?

Did you even read the chapter? Have you tried google or wikipedia? If you want to pass history, you should start by reading the chapter in your book. I'm not doing this to be mean, I'm just saying that there won't be a yahoo answers that you can use on the actual day of the test, and you won't be able to respond to the test questions. Just imputting "Who overtook the Koryo dynasty in the late 1200s? into google will probably find your answer. Sorry, I'm willing to help you maybe when you narrow down the questions you really couldn't find in the book to one or two questions-not your entire homework assignment.