Apush short response please help

Why did the german kingdoms unite into one nation of germany?

Why did the us government remove native americans from the southeast in the 1830s

What was the main point of helen hunt jackson's book, century of dishonor? a.it showed how unfairly american settlers were treated by the us government. b.it proved that american government was not responsive to the will of the people. c.it made the point that free land was no longer available to new settlers out west. d.it outlined the poor treatment of the native americans by the government.