dont memorize it ... understand the story behind it. soon , you'll get to use logic to figure out the answer.

exactly .

so think as the previous leader would , use their logic ..

for example , the british empire last time would go to all sorts of things to get advantage , so just think of whatever devious method they may use , and you will DEFINATELY recall what you learn about it at the first place.

unless of course you don't pay attention in classes then gg