5. What pattern was set for entering Free States and Slave States between 1820 &
1848? Why did the balance matter?

After the initial admission of the original thirteen colonies to the Union by Constitutional ratification, the balance between slave states and free states was roughly maintained by one slave state and one free state being admitted to the Union within a year of each other.

Explanation:

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

during the ming dynasty