Hey there

If your looking for one liner notes that it seems difficult for a vast subject like history that if full of facts and dates. However, if you want to learn the topics in an easy manner then you can refer the reference books as per your choice and writers.

In reference books, you'll get summary of the lessons, flowchart of historical events, important dates to remember and short notes on important topics.

You can also refer to internet sources for such short notes.

Thanks