 Other countries remained neutral, this neutrality faced serious opposition from sympathizers in the United States and United Kingdom, and to a lesser extent in other European countries and from Marxists worldwide.This led to formation of the International Brigades, thousands of foreigners of all nationalities who voluntarily went to Spain to aid the Republic in the fight; they meant a great deal to morale but militarily were not very significant.The Republic's supporters within Spain ranged from centrists who supported a moderately-capitalist liberal democracy to revolutionary anarchists who opposed the Republic but sided with it against the coup forces.