explain why president wilson initially opposed us involvment in wwi, and why he later changed his mind.

Initially he wanted peace and to remain neutral. However, he changed his mind and declared war after the Zimmerman note.

Explanation:

President Wilson said 'No' to the involvement in world war I at the initial stage because he wanted peace to rein. In addition, he wanted to be neutral and not take any side in the war. However, he decided to change his mind later on due to the note he received. After reading the note, he decided to be involved in the war.