what peace agreement established the U.S. British, Spanish, Russian, French.

The peace agreement you are referring to is likely the Treaty of Paris, signed in 1898. This treaty ended the Spanish-American War and resulted in Spain ceding Puerto Rico, Guam, and the Philippines to the United States. However, it should be noted that Spain, the U.S., Britain, France, and Russia were all involved in various treaties and agreements throughout history, each with specific contexts and outcomes related to different conflicts. If you meant a different viewpoint or context regarding the involvement of these nations in peace agreements, please clarify!