Help me i will gladly give you 15 points to help me!! What were the four reasons the United States believed manifest destiny was
necessary? What do you think was the most important cause and why? Please
make sure your answer is at least 250 words.

judaism developed through the growth of a single nation of people

christianity developed through followers spreading the religion throughout the world.

explanation:

d.

the northwest territory became the most densely populated area in the u.s.

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.