Answer:
Explanation:The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
The Pullman car business. This was because after the workers went on strike, the government attached mail cars to every train carrying a pullman palace car, and declared that it
is illegal to stop federal mail.
A pattern to remember: in the vast majority of strikes, the government will side with the business over the workers on strike
Other religious influence and afraid of war
A. Ulysses S. Grant led the union at the battle of antietam