OK, I am sorry, but I just found this online and thought that it was a pretty cool way to remember the four MAIN causes of WWI.
M= Militarism, A= Alliances, I= Imperialism, N=Nationalism.
If I have to be honest, out of all the four causes, I think that Militarism was the greatest impact in starting the war. The reason I think that it is, is because it was literally a race in arms. Countries were trying to one up each other on weaponry and try to get better stronger weapons to win the war.
African american businesses recieved less income, less customers, and often times had to shut down from debts.