their wedding was on june 28, 1919, exactly five years to the day from when archduke frantz ferdinand was assassinated and the war began. day 28, 1919 was also the that the versailles treaty was signed, ending the war. it was a very important day for truman on many accounts. truman was a woodrow wilson democrat. he believed in woodrow wilson's ideas of international organization. in world war i, the league of nations had failed. after world war ii, truman was determined to make the new united nations work. there was one connection from the war. after world war i, truman went into business, which failed because there was a depression after world war i. after world war ii, harry truman was careful to keep economic controls on the economy while the economy switched from a thetary to a civilian mode, reconversion of the american economy. there was no depression after world war ii. truman also believed in justice from war, the proper way to deal with former enemies is to control them and make them friends. this is what he tried to do both with germany and japan after world war ii. bring th