Why was archduke francis ferdinand assassinated?

Which of the following are details about the compromise of 1877? election results in a couple of states were in dispute and too close to call. samuel tilden would be given the win in exchange for the removal of federal troops. the presidential election was close between rutherford hayes and ulysses grant. it was agreed troops would leave the south in exchange for a hayes victory.

During the world war 2 the united states government detained 11,000 , german-americans and isolated them in camps for the duration of the war. which term refers to this process

When was the versailles treaty signed