Answer:
Other nations in the area did not support long-term U.S. involvement there.
Explanation:
The problem centered around factories that used a new based technoloy.
Andrew carniege installed a lot of new inventions in order to increase the efficiency of his production. This ended up making a lot of skilled workers to lose their jobs/position in the industry and replaced with low skilled worker to operate the machinary.
Explanation:
Become the most populous empire in the world.