The answer to this should be: A sizable middle class has developed.
With a middle class they can create a better governance; The Middle Class has a strong interest in promoting foresighted policies and making government work well because their economic fate is more closely tied to the quality of government than that of the wealthy.
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Another name for enlightenment period is the age of reason
The answer to this would be gunpowder
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>