One way in which <span>European imperialism contributed to the start of ww1 was that European nations were in heavy competition over obtaining natural resources and territory in places like Africa and South America--leading to an "us vs. them" nationalistic mentality. </span>
Answer:
The newly united Arab Muslims had not posed a threat before
Explanation:
I don’t know if this will help you But here is what I got about the Mexican American War.
The Mexican-American War (1846-1848) marked the first U.S. armed conflict chiefly fought on foreign soil. It pitted a politically divided and militarily unprepared Mexico against the expansionist-minded administration of U.S. President James K. Polk, who believed the United States had a “manifest destiny” to spread across the continent to the Pacific Ocean. A border skirmish along the Rio Grande started off the fighting and was followed by a series of U.S. victories. When the dust cleared, Mexico had lost about one-third of its territory, including nearly all of present-day California, Utah, Nevada, Arizona and New Mexico.
