Why was it so important for all the states to ratify the constitution?

it is important for all 13 states to ratify the constitution because if that is done, nobody will be left extremely unhappy. the whole country needs to be willing to work together without too many disagreements.

hope that helped ;)

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.