International Workingmen's Association

In January 1865, Marx wrote to Lincoln on behalf of the International Workingmen’s Association, a group for socialists, communists, anarchists and trade unions, to “congratulate the American people upon your reelection.”

He was actually good at running the show—as an editor and, later on, as the dominant figure in the International Workingmen’s Association, known as the First International.

In Zurich, Karl Marx invited him to become the representative of the left-wing International Workingmen’s Association in Transcaucasia.

Relations between Marx and Engels, and Eccarius started to fray within a few years of the gift of the book, and in 1872 Eccarius resigned from the First International, also known as the International Workingmen’s Association, though he would spend the rest of his life as part of the labour movement.

Manifesto," in which he reiterates the necessity for international co-operation among workingmen, and concludes: "The First International Labor Congress declares that the International Workingmen's Association, and all societies and individuals belonging to it, recognize truth, right, and morality as the basis of their conduct towards one another and their fellowmen, without respect to color, creed, or nationality.