In 1787, most countries in the world had a(n) form of government. confederal federal unitary democratic theocratic

The answer is unitary form of government. The unitary form is a state governed as a power of solitary in which the dominant government is finally supreme and any organizational separations or so-called as sub-national components use only the controls that the central government selects to representative. The mainstream of states in the world have a unitary scheme of government.