They used the technology in conquests to expand the empire.
Which war? World war 2? If world war 2, it was due to the fact that their home towns were in rubble, and were looking for a new home for them, and their family.
As described, I am assuming that by "legislature" you mean "Congress" as in both the House and the Senate.
With that caveat, the correct answers are:
The leader of the House of Representatives is called the Speaker of the House.
Senators are elected for a six-year term.
He became the political leader of the american revolution
