China was named after its first emperor war.
True.
The president cannot be chief justice - this would be a breach of the separation of powers. Chief Justice is a member of the judicial branch of the government; and the president is the head of the executive branch of the government, so they should not be the same person - the answer is d)
Land which has not yet been divided into states is almost always referred to as a "territory". Many of the places that are currently states in the US began as territories, such as Alaska.
US government has a limited power because it cannot do certain things, and specifically it is not allowed to breach certain individual freedoms: so it can be said that the motivation for a limited government is to protect individual freedoms.
See for example the text of the first amendment:
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof" - this limits the power of the government so that people have a freedom to practice their religion.
when does this take place like in the 1900