Which of the branches of the federal government is divided into two seperate chambers? what are the chambers?

In japan, the is the head of state and the is the head of government.who ever answer will get

What affected the second industrial revolution have on transportation

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.