Read the dictionary definition of unite. All definitions for this word.
1. join or combine
1. We merged our resources
2. become one
1. Germany unified officially in 1990
2. the cells merge
3. act in concert or unite in a common purpose or belief
4. bring together for a common purpose or action or ideology or in a shared situation
1. the Democratic Patry platform united several splinter groups
5. be or become joined or united or linked
1. The two streets connect to become a highway
2. Our paths joined
3. The travelers linked up again at the airport
6. have or possess in combination
1. she unites charm with a good business sense
See also:
Merriam-Webster definition of unite