Combining forces is a term used to describe when two or more entities join together in order to achieve a common goal. This could be two people, two companies, two countries, or any other combination of entities. By combining forces, the entities are able to leverage their collective resources and strengths to achieve a greater outcome than they would have been able to do on their own. Uniting is an important part of this process, as it allows the entities to work together in a unified way to reach their goal.