President Andrew Jackson didn't want to have a war with Mexico but also did not want to deal with adding what could be another slave State. Jackson believes that if Texas was annexed, the other countries would view the United States a traitors. He was passionate about Texas but he was more passionate about keeping the Union together.
Civil Rights Movement was caused by the rampant discrimination of the segregation laws that had continued in the USA.
Explanation:
Segreagation laws were an arachaic practice that had continued in the USA even as the world was rapidly decolonizing and becoming increasingly free among its people.
Many countries had already achieved universal suffrage but USA was far behind in this thing from the other countrysides of the world
Thus the leaders felt that there was a need for revolution to bring constitutional equality to USA that it has always talked about in its constitution but never actually practiced in real.
I would rather be poor and be able to do everything. I could get a very good paying job and eventually reach the same wealth as if I was rich in the first place.