Most people in the colonies at the time considered they wouldn’t go to war, if they did and won, they’d become a vassal state.
The answer is "All beliefs"
The correct answer is that the war would cost American lives.
Whenever the United States enters a war, there is also the risk of losing soldiers who are fighting over seas. This is general knowledge for most Americans, as they understand that the individuals who enroll in these services due run the risk of having to fight in potentially dangerous situations. This was no different during World War I, as this situation became a reality for thousands of soldiers.
The first major domestic crisis of the US government under the Constitution resulted from the federal government exercising its new right to tax the states in order to bring in more revenue to pay down the war debt.