One of the action that some European leaders did that led to requests for the League of Nations to help is: <span>They invaded other countries to gain new territory
League of Nations will only be involved if there is a dispute between two nations that could led to war. In a territorial conflict between two countries, league of nations will be responsible for mediating the conflict and determining the true owner of that territory.</span>
Generally speaking, William the Conqueror crushed rebellions by quickly killing the leaders of the rebellions, along with anyone who was found to support them--thus leading people to avoid associating with the rebellion in question.
Do not cheat, lie, kill, or steal