Political map of North America & the Caribbean 27 October 1979 (Decolonization in the Caribbean): In the 1960s and '70s, the British withdrew from most of their remaining colonies in the Americas. A brief attempt to create a West Indies Federation collapsed when Jamaica and Trinidad and Tobago decided to pull out, resulting in each island group getting its own independence. Elsewhere in the region, the British and Dutch left Guyana and Suriname; and the US agreed to return the Canal Zone to Panama (Torrijos%E2%80%93Carter Treaties).