The English, Dutch and French forces saw that the Caribbean islands where valuable and those European powers started to fight for it, when the English started to prevail Spain was forced to retreat and the consequences where that Spain lost one of its valuable land but also it lost soldiers during the fights it had with the other powers.
The British recruiting the American colonies to fight the land. the British said they would give part of the land to them but failed to do so
NATO was designed to improve on the alliances of the past and to modernize the alliance system in light of the threat of nuclear power. The idea of collective security meant that war could trigger alliances linked on social, political and economic and ideological frameworks as well as a deterrent in terms of nuclear power.
Chinese, Soviet Union, and Warsaw pact allies