Around the time of Julius Caesar the form of roman government effected the change from the form of Republic to that of Empire. This, however, only happenned after his death by assassination and was succeeded by his grandnephew Octavius, who in fact was the first Roman Emperor.
The answer is B. Partisanship.
Partisanship is basically political bias; a party is in favor of a specific cause/event. Therefore, when elected officials support the policies and programs of their own party, they're engaging in partisanship.
They moved around (though the cowboys were herding cattle, whereas the Native Americans were following the buffalo). They cared for the cattle (eg by bog-riding and from line-camps) in a way similar to the way Native American dog-soldiers cared for the buffalo.
A. The government fell apart
<u><em>The Bill of Rights of the United States</em></u> is the collective name given to the first ten amendments of the Constitution of the United States approved on December 15, 1791.
It was an answer to calm the fears of antifederalist groups, some of them influential opponents of the Constitution, and prominent members of the Philadelphia Convention, who argued that it failed to defend the basic principles of human freedom. These amendments guarantee a series of personal freedoms, limit the power of the government in judicial processes and others; and some faculties are reserved for the states and the people.