• Britain takes control of the islands, along with Jamaica, under the terms of the Treaty of Madrid. 

  • The Cayman Islands become a Jamaican dependency.

  • The Cayman Islands join the Federation of the West Indies.
  • Jamaica declares independence after the Federation of the West Indies dissolves, while the Caymans remain under a separate British rule. 

  • A new constitution is set in place, providing greater autonomy for the Caymans. 

  • The British Overseas Territories Act grants British citizenship to all Caymanians.

  • The Cayman Islands are put under a microscope by the US government as part of their attack on tax havens. Later that year, the country becomes part of the Organization for Economic Co-operation and Development's global "white list" of countries using internationally recognized tax standards. 

Sources:

BBC News open_in_new
Britannica open_in_new