Answer:
The Constitution
Explanation:
The Declaration and The Emancipation were both documents to establish America's Independence from Britain. And "The Pledge of Allegiance of the United States is an expression of allegiance to the flag of the United States and the republic of the United States of America."
Pamplets, writings, that sort of stuff
First Answer:
The socialism never found support among the people in United States due to small power of the workers Union. Also, companies have more political and financial power over their demands.
Second answer:
There could be more support for the homeless and poor people in big cities. Health care and some childhood protection against poverty might be another benefits from it.
Third answer:
The negative aspects we could imagine as the political power of unions increased among the workers. They would start attempting a coup across the country in order to start a social-communist regime. Another problem could be the increase in corruption, based on the good faith of the poor, that is, they could "buy votes" among the poor by threatening them with benefits' cut if the worker does not support them or does not vote for them.
Each enemy believed that willpower was weaker on one side rather than the other, resulting in them believing it would be easy and done with.