Final answer:
Conservatives were happy with the new Constitution, while liberals and radicals would have criticized it.
Step-by-step explanation:
The group that was happy with the new Constitution of 1791 were the conservatives. They believed that a strong central government led by the social and economic elite would benefit society as a whole. On the other hand, the liberals and radicals would have criticized the new constitution for different reasons. Liberals would have argued for a less powerful central government and more restrictions on its operation. They would have trusted the people to maintain a virtuous political system. Radicals, on the other hand, would have criticized the new constitution for not going far enough in implementing radical social and political changes.