
The English came to Barbados in 1627 and there followed a brutal and sadly typical exploitation of people and natural resources. The growth of the sugar industry increased demand for labour and British-run Barbados was at the forefront of the slave trade. Abolition of slavery made some difference but mastery from London was still the norm. In the early 20th century, campaigners started to push for greater self-governance and independence. Barbados gained its first Premier in 1953 with full internal self-government from 1961. Full independence was realised in November 1966 and this stamp was issued a year later.
https://en.wikipedia.org/wiki/Barbados