Colonies are often established by countries in order to expand their territory, gain access to new resources, or spread their culture and religion. States, on the other hand, are independent political entities that have their own government, laws, and currency.
Colonies may eventually become states through a process of decolonisation, which can occur peacefully or through violence. Once a colony has become a state, it is no longer under the political control of another country and is free to choose its own path.
There are many examples of former colonies that have become states, such as the United States, Canada, and India. The process of decolonisation is still ongoing in some parts of the world, such as in the Palestinian territories and Western Sahara.