Answer:
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.
What do you mean by help settle the west
Wrote a letter to the president protesting unequal pay for black union soldiers ( James Henry goofing)
ran a government agency that helped locate missing soldiers (Clara Barton )
founded a confederate hospital to treat injured soldiers (sally tompkins )
The phrase ¨In order to form a more perfect Union¨ would be the best answer. Hope this helped