The reform movement in politics, the society, and the economy was known as the Progressive movement.
This movement took several different steps to change American society. This included
A) The development of anti-trust laws- This would clean up the economy and stop monopolies from cornering markets and participating in price gouging.
B) Muckraking- Journalists exposed social ills in American society by writing influential books and using photographs to show things like the horrible working and living conditons of American citizens. This lead to changes in law (like the Meat Inspection Act) that increased consumer and worker safety.
C) 17th amendment- This lead to citizens voting directly for their US Senators instead of having them picked by members of the state legislature. This helped to stop political corruption.
Slate is much more commonly found in wet areas, especially around rivers in the United States, so it wouldn't be very available to Natives who were more inland.
For when they took over land? well you have to know that Mexico did not want to give land to America. Eventually though, due to Mexico not having alot of people to live on said land they told Americans that they could settle there .. ONLY if they became Mexicans and they converted to Catholicism. Americans of coarse agreed...BUT......many didn't fuffil that promise . It could be said and arued that the domanent strategy for America was to settle on the land and take it over from the inside.
