As its title implies, Centenary of World War, the UNIA and 'Race First' was written as a commemoration of those 3 important events in Afrikan people's and broader humanity’s history. It presents evidence supporting the thesis that Marcus Garvey was the greatest grassroots organiser of the twentieth century. It exposes a fake debate which occurred in Britain shortly before the centenary year which misleadingly claimed - in opposition to the historical record - that 'Marxists' cannot be members of the UNIA. It concludes by identifying the origin of 'Race First' as an idea and term, demonstrating that it was brought into the UNIA by what the fake debate wrongly labelled 'Marxist members' of the UNIA.