Well the other guys answer is technically right their a few more details to it. The league of nations was also another attempt to stop further wars between various groups in the world. They didn't want another Holocaust or world war to happen so it made it that all nations would turn on one nation or nations if they did go rogue and attack.
Answer:
The Mongols. (Genghis Khan, so on, so on.)
Explanation:
When the Mongol Empire was per se at its peak, the Mongols had controlled much of Eastern Europe and the majority of mainland Asia. This meant they controlled The Silk Road, the many trade routes between Europe and China.
The British was able to win the Seven Years wars through;
• Proper leadership through William Pitt who invested heavily in the war by increasing his control on North America. Louis XV of France was more occupied with his wife and court proceedings that diverted his attention on the colonies.
• Application of a different global strategy-William Pitt invested more money and resources in the conflict in the colonies.
• There was collaboration with authorities-Local authorities were granted control over supplies and recruitment of soldiers.
• British were having a better navy and controlled most of the harbors.
• The British had large numbers of soldiers and better resources.