Arrange the events in Ghanaian history in chronological order using the numbers 1-6.
Ashanti King Osei Tutu establishes a well-organized society and a capital at Kumasi.
The Portuguese build a large castle at Elmina.
The Gold Coast officially becomes a British colony.
The British depose the Ashanti king, Prempeh I.
The Ashanti culture flourishes in central Ghana.
The Gold Coast becomes the free country of Ghana.