What political parties helped establish the two-party systems in the united states??

Democrat and Republican parties helped establish the two party system.

Explanation:

Please mark brainliest

the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.

there are hundreds of postives ways to unite a country with another country here are a   few

1 peace treaty's peace treatys

are basically a document signing a allliance with one country and another.

2 gift

what i mean by this is for example how the french gave the americans the statue of libery a gift of peace.