Which law was created in order to keep a balance of power between slave n free states in the union

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

What was the great awakening? a. a religious movement b. a social movement against slavery c. a political rebellion d. a scientific movement

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.