Americans feared communism would prevail.
In lots of different ways actually
Spain, Portugal, England and France all wanted to establish territories in the Western Hemisphere. The reasons were to gain more territory and to take advantage of all the raw resources found in the New World, Especially gold and silver along with timber and other resources. It was for a Competition of the Empires so that they'd become the most powerful in the world.
The idea of women suffrage was at most importance at the convention and all women there were gathered to discuss this right. The convention itself is one of the first US historical examples of women advocating for their rights. Seven years later women gained the right to vote.
