The caste system is one ancient Hindu belief that still affects modern-day India. Although, it is no longer enforced in modern-day India but the idea of it is still thrown around. I hope I helped in some way, you should look into it a little more so you can have reasons how and why it make still be thrown out there, and how it is still present in modern-day India.
President Polk wanted California but knew Mexico would not agree to sell it and his only avenue was to start a war (knowing the US would win it).
The WPA (Works Progress Administration) was an American New Deal Agency which employed a very large amount of people, mostly unskilled men to carry out public works projects, like construction of public buildings and roads. The main purpose of the WPA was providing income and jobs for millions of Americans who didn't have opportunity of studying a profesional carreer.
Some white abolitionists worried about the effect free African Americans would have on society. The American Colonization Society then planned to send free African Americans to Africa to start new lives.
HOPE THIS HELPED!!! XD