Social Democracy of America

The Social Democracy of America (SDA), later known as the Cooperative Brotherhood, was a short lived political party in the United States that sought to combine the planting of an intentional community with political action in order to create a socialist society. It was an organizational forerunner of both the Socialist Party of America (SPA) and the Burley, Washington cooperative socialist colony.

The party split into political and colonization wings at its convention in 1898, with the political actionists establishing themselves as the Social Democratic Party of America (SDP).