Washington D.C. was a political city.
Answer:
One of the things that motivated American Imperialism is economic. During that time, the US was already gaining industrial power, which means that they were trying to find new markets to sell their goods. Another motive that led to imperialism was military power.
Explanation:
Democrats are liberal and Republicans are Conservative. Hope this helps :)
They wanted to continue the spread of slavery so they could expand their influence and continue their own way of life