Well the assassination of Archduke Franz Ferdinand is said to be the most immediate cause of ww1
Johnson announced that he would not run for a reelection, and that's when Humphrey decided to run, launching his campaign for presidency right after. Considering that he was loyal to Johnson's administration policies considering the Vietnam War, his own party disliked the idea of him running and they opposed to it, since they disagreed on how Johnson was dealing with it all.
Andrew Jackson died because of two lead bullets fired at him. This caused his heart to fail.
the answer is d all the other ones dont even make sense
About 23,000 men died, were wounded, or went missing over the course of the single-day battle.
Hope this helps!
- Melanie