What was the main purpose of the three-fifths compromise?

a. to increase the power of northern states in congress

b. to increase the power of southern states in congress

c. to divide power between branches of government

d. to divide power between federal and state governments

B. to increase the power of southern states in Congress.

Explanation:

The 3/5 compromise was the ability to count 3/5th of a state slaves to count as one citizen, which would help make congress more "proportional" & giving the south more power. This is because the South had a smaller citizen population, & adding the slave population would even the playing fields within the government.

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because mexico wanted to choose a centralized location