The Bahamas is made up of thousands of islands and big rocks in the Atlantic Ocean.
Columbus passed by in 1492, but Spain didn't seem to care. The British moved in during the 1620s, but after almost 100 years of bad internal management, the islands became a British Crown Colony. The Bahamians achieved self-government in 1964, started making their own coins two years later, and achieved full independence in 1973.
The monarch of the United Kingdom is Head of State, and is represented in the Bahamas by a governor-general (just like Canada).
Bahamas on Wikipedia