The Jamaica Trades Union Congress and the National Workers Union allied themselves to the People's National Party (PNP), led by Norman Manley in opposition to Bustamante.
The only allies of the People's National Party were union groups.
mnli hypothesis: The only allies of the People's National Party were union groups. premise: The Jamaica Trades Union Congress and the National Workers Union allied themselves to the People's National Party (PNP), led by Norman Manley in opposition to Bustamante.