Both France and Spain provided support to the Continental Army against the UK.
They heavily taxed Africans living in colonies to support European industries.
The Americans decided to help the Latin-Americans in their fight for their independence because of the American Revolution. Latin-Americans were inspired by the American Revolution, therefore, the Americans decided to help in their fight for independence.
The main resistance was provided by those who believed like George Washington that the US should not meddle in European affairs.
It was a plan to send economic support to the European countries after World War 2. America was afraid that these countries would become communistic. It seems weird now to think so but when your country is completely destroyed a state in wich everything is shared doesn't seem so wrong. With the economic support most countries joined America. Another reason was that America would now have a European market to sell their products.
Both colonias and barrios provided a support network for Mexican Americans.
Britain
Several countries have supported the Free Syrian Army (FSA) in Syria, but the extent of support may have varied. Notable countries that have provided varying degrees of support to the FSA include Turkey, Saudi Arabia, Qatar, and the United States. It's important to mention that the dynamics of support can change over time due to geopolitical shifts.
Both France and Spain provided support to the Continental Army against the UK.
Both colonias and barrios provided a support network for Mexican Americans.
They heavily taxed Africans living in colonies to support European industries.
The Europeans and Americans both helped support the Greek Revolutionary Movement. They did so to help Greece gain independence as America and many European nations had. They gave both moral and monetary support.
All of these answers are good ones. Alliances are made for support.
France and Spain, were the 2 nations that helped to support financially and fought with the Americans against Great Britain.
The answer is prohibitively long, and is more completely provided at the link below.
they killed everyone in all the other countries even their allies
So the Europeans would gain allies from the countries.