The Triple Alliance (German: Dreibund, Italian: Triplice Alleanza) was the treaty by which Germany, Austria-Hungary, and Italy pledged on 20 May 1882 to support each others militarily in the event of an attack against any of them by two or more great powers. Germany and Italy additionally undertook to support one another in the event of an attack by France. In a supplementary declaration, however, Italy specified that her undertakings could not be regarded as being directed against the United Kingdom.
The Triple Alliance of 1668 consisted of England, Sweden, and the United Provinces. It was formed to halt the expansion of Louis XIV's France in the War of Devolution. The alliance never engaged in combat against France, but it was enough of a threat to force Louis to halt his offensive and sign the Treaty of Aix-la-Chapelle with Spain.
The Triple Alliance was a treaty between the Dutch Republic, France and Great Britain, against Spain, attempting to maintain the agreement of the 1713 Treaty of Utrecht. The three states were concerned about Spain becoming a superpower in Europe. As a result of this militarisation took place, causing great havoc to civilians.
The Triple Alliance brought together British trade unions representing miners, railwaymen and transport workers. The alliance included the National Union of Mineworkers, the National Union of Railwaymen and the National Transport Workers' Federation, the last-named being an association of various different unions for dockers, seamen, tramwaymen and road vehicle workers. The formation of the alliance followed a period of rapid trade union growth and widespread strike action - the 'Great Unrest' of 1910-1914 - and appeared to signal a significant step towards greater unity within trade unionism.