Question

what important action did the first congress take in 1789?

Answer 1

While this may better be addressed in a different forum, the likely answer would be "achieved a quorum in both houses and elected George Washington as president". Maybe. I'm a math geek.

Answer 2

they approved the bill of rights :)

Answer 3

They also created the court system. Take your pick.

Answer 4

thanks

Answer 5

The Bill of Rights was ratified in 1791, not 1789 (that's when it was proposed).