The League of Nations was established after World War I to maintain world peace. Why was the League of Nations unsuccessful in i
ts mission? The start of the Great Depression caused nations to stop supporting it financially. The League of Nations depended on the cooperation of its members and lacked an enforcement mechanism. The United States did not join the League of Nations, and therefore the League of Nations suffered from a lack of American leadership. All of these are correct.
Just a couple things diseases that affect them during pregnancy birthing troubles possibly cultural or religious traditions that would make it hard for them to survive.