If there were 20,528 voyages made by ships and 12 million slaves, how large was the average human cargo aboard a ship?

About 585 slaves aboard each ship.

Explanation:

If you divide the amount of voyages (20,528) by the number of slaves (12,000,000) you will get a decimal that rounds up to 585.

Step one) Divide the number of slaves by the number of voyages

Step two) Round your answer to the nearest whole number

Hope this helps!

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.

c. is the western hemisphere.