Governments are important because
they enforce rules that control conduct within a population
they control every aspect of the population
they eliminate the need for participation in national decision

A) they enforce rules that control conduct within a population

Explanation:

Because without no government who is going to enforce rules on the states when things start going downhill with the states. And its common sense.

Hope this Helps you. :)

this question does't support enough resioning to answer.

its d i know cause i've been googling it