Why did the Preamble to the Constitution begin with the phrase "We the People" ?

The writers of the Constitution began their document with the three words "We the People" because they wanted to signify the fact that the citizens of the United States give the power to the government.

Explanation:

The Constitution begins with We the People because it tells us we are United. It also tells us the rules are for US citizens.

the first two-party system consisted of the federalist party, who supported the ratification of the constitution, and the democratic-republican party or the anti-administration party (anti-federalists), who opposed the powerful central government, among others, that the constitution established when it took effect in