8. Which event(s) helped establish international law? *
O
formation of the United Nations
O
Nuremberg & Tokyo War Crimes Trials
Warsaw Pact & NATO alliances
o
implementation of the Marshall Plan

Formation of the United Nations

Explanation:

The UN Charter sets out four main purposes: Maintaining worldwide peace and security. Developing relations among nations. Fostering cooperation between nations in order to solve economic, social, cultural, or humanitarian international problems.

At the urging of the Pope Urban II in 1095, the First Crusade that succeeded in taking the Jerusalem and was the most successful from the European point of view. When Jerusalem fell in 1099, crusaders massacred Jews, Christians and Muslims alike. 

Hope This Helps! :)