Answer:
Congress was concerned about how admitting it as a slave state would affect representation and the balance of power between states.
Explanation:
During that period, Missouri was a huge area that was called Missouri Territory and by 1819, there were enough people in part of that so it could be considered a state. But to be considered a state the Congress had to approve it.
In that period there was a struggle between free states and pro-slavery states the union wanted a balance between those two and the addition of a new state could ruin that balance.
The admission of Missouri would have added a slave state to the Senate and left northern non-slave states as a minority. This is the reason the application of Missouri caused a two-year debate.
Franz Joseph Hadyn. I learned this last semester. :)
Because the gupta empire started trading and had more resources than the maury an empire did