You can be disagreeing with someone and it can lead to negotiation.
You can negotiate and it can lead to a disagreement.
Conflict; to disagree with someone.
Negotiation; discussion aimed at reaching an agreement.
Answer:
Image result for what native american tribe was part of the first thanksgiving
As was the custom in England, the Pilgrims celebrated their harvest with a festival. The 50 remaining colonists and roughly 90 Wampanoag tribesmen attended the "First Thanksgiving.
1) He founded the Protestant Reformation
2) Made the Bible available to those who couldn't have it before
3) Under the threats of death and arrest, he continued to preach his message, a feat many wouldn't dream of attempting
4) He organized schools, and wrote instructions for the teachers and pastors there as well.
Paraphrased from ThoughtCo.