What is the social process that happens when two or more groups become one through a formal union?

The social process that happens when two or more groups become one through a formal union is called amalgamation. Here are the steps that describe this process:

1. Identification of Groups: The first step in the process of amalgamation is the identification of the groups that are to be amalgamated. These groups could be social, cultural, or even political entities.

2. Negotiation: Once the groups have been identified, the next step is negotiation. The groups discuss the terms and conditions of their union. This could involve discussions about leadership, resources, and other important aspects of the union.

3. Agreement: After negotiations, the groups come to an agreement. This agreement is a formal document that outlines the terms and conditions of the union. It is signed by the leaders of the groups.

4. Union: Once the agreement is signed, the union is formed. The groups become one entity. This is the final step in the process of amalgamation.

5. Integration: After the union, the groups begin the process of integration. This involves merging their resources, cultures, and systems to form a cohesive unit.

6. Maintenance: The final step in the process of amalgamation is maintenance. This involves ensuring that the union remains strong and cohesive. It could involve conflict resolution, resource allocation, and other activities that ensure the longevity of the union.