The senate has advice and consent powers. This means they do things such as sign treaties. The house focuses more on reviewing bills.
It can either bring people together into a new fused culture, or it can diffuse them. If various people exist of various cultures and a new empire rises then the leader has to accept all the people into his empire. This means that the cultures all exist and since they all have to behave according to what the emperor says, the cultures often mix and create somewhat of a mixed culture.If the empire separates people then it leads to diffusion because new aspects of cultures develop independently.
His promise was to reduce the number of troops in Vietnam. This was popular because the public support for the war effort was becoming weaker and weaker and even those who used to be proud of those in Vietnam started losing respect for the government that sent them there. This won him a lot of votes, especially among republicans whose children were in the war.