A more thorough explanation:

A neutrality proclamation is an announcement made by the President of the United States during a war between two nations, declaring that the United States will remain neutral. This means that the United States will not take sides or get involved in the conflict. The proclamation also states that American citizens must follow the neutrality laws and not support either side in the war.

For example, in 1793, during the war between France and Great Britain, President George Washington issued a neutrality proclamation. This meant that the United States would not take sides in the conflict and would remain neutral. American citizens were also prohibited from providing any assistance to either France or Great Britain.

The purpose of a neutrality proclamation is to maintain peace and avoid getting involved in conflicts that do not directly affect the United States. By remaining neutral, the United States can avoid being dragged into a war and can focus on its own interests and priorities.