It seems that it’s hard for me to memorize any dates or events that happened in the US history when I read the book of US history.

It’s not a thick book, only 150 pages, well, for all, US only has 300-400 years history. Before I read it, I have such confidence that it’s no problem to review it and memorize it since I can remember Chinese 5000 years history. But after I began, I know I am wrong.

It’s not like that the book is hard to read, but it’s my problem, I have difficulties to focus myself on those dates, events and person’s name… 

Who can help me??!!