According to the preamble to the constitution, what is one purpose of the government

According to the preamble the purpose of the federal government is to, establish justice, ensure domestic tranquility, provide a common defense, promote the general welfare ecure the Blessings of Liberty to ourselves and our posterity.

According to the preamble to the constitution, one purpose of the government is to keep the peace domestically. It states that the government should insure domestic tranquility, defense the citizens and promote there welfare.

The preambre of the constitution states:

"We the People of the United States, in Order to form a more perfect Union, 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, do ordain and establish this Constitution for the United States of America." 

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.

b. introduce the core ideas of the new government.