Complex sentence: UNIA 1929 conventions were held in Canada in 1936,1937 and 1938; the 1937 sessions were highlighted by the introduction of the first course of African philosophy conducted by Garvey.
Split into simpler sentences: UNIA 1929 conventions were held in Canada during 1936,1937 and 1938. The 1937 sessions were highlighted by the introduction of the first Course of African Philosophy conducted by Garvey.