Final answer:
Negotiation is the process by which two or more parties work together to reach an agreement on a matter. It involves discussions, compromise, and finding common ground.
Step-by-step explanation:
The process by which two or more parties work together to reach an agreement on a matter is called negotiation. Negotiation involves discussions, compromise, and finding common ground between all parties involved. It is a common method used in politics, collective decision-making, and conflict resolution.