I'm assuming that the question is "what is the purpose of government?".
To answer the question, the purpose of a government is to protect civilians of the country, set laws, to set things straight. Imagine a world without a government, everything would be very out of control, and there would be no laws, so then everyone would be doing their own thing. So when there is a government, there's most definitely a purpose.
The purpose of our Federal Government, as found in the Preamble of the Constitution, is to "establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our posterity."
