Answer:
Good
Explanation:
Westward expansion helped the economy by land, mining, and improved transportation by rail brought settlers to the American West during the Gilded Age.
Limits on U.S. and Soviet weapons (hence the title "Strategic Arms Limitation")
The correct answer should be Advances in Technology and Industrial revolution
Mexican-American war happened in the 40s so that's before 1860, while a war with Spain occurred in 1898 which is after the mentioned period. They did advance in technology exactly due to the industrial revolution. An agrarian revolution. An agricultural revolution didn't happen in the US because of the Long depression that slowed it all down.
Thomas Edison's first great invention was the tin foil phonograph made in Menlo Park on August 12, 1877, so that is when he first made his impact on culture and society.
Answer:
the went at war with them and took every piece of land
Explanation:
