This question asked “For how many years was Guyana known as British Guiana?”

One is a Centenary History of British Guiana by a Guyanese, A.R.F. Webber, printed and published by the Argosy in 1941, to celebrate one hundred years as British Guiana.

Both include the change from two colonies, Essequibo-Demerara and Berbice, to one colony, British Guiana, with three counties, Essequibo, Demerara and Berbice in 1831.

I am forever thankful to Mavis Pollard who introduced us to the geography of British Guiana and Elsa Gouveia, another Guyanese who introduced all the History students to Caribbean History at what was then the University College of the West Indies (an external college of the University of London).

There is also a Grade Two Assessment Test from 2013, I think it was, in which the students were asked to identify a right angle on a drawing in which two right angles were marked.