The World Wars taught us some important lessons:

1. Human Cost:

   • In World War I, about 10 million soldiers and 7 million civilians lost their lives.
   • World War II was even worse, with around 70 to 85 million people dying. That was about 3 to 4% of the world’s population at that time.

2. Economic Impact:

   • After World War I, Germany had to pay a lot of money, which caused terrible inflation. In 1923, prices shot up by 29,500%!
   • After World War II, the United States gave $13 billion (that’s over$150 billion today) through the Marshall Plan to help rebuild European countries. This investment helped the economy grow and stopped the spread of communism.

3. Political Changes:

   • The League of Nations was formed after World War I but it couldn’t stop more wars, leading to World War II.
   • After World War II, the United Nations was created to work for peace and security. This has helped keep Europe relatively peaceful since 1945.

4. Military Strategies:

   • The World Wars brought about new ways of fighting and created advanced technologies like tanks, aircraft, and eventually, nuclear weapons.

5. Social Changes:

   • Both wars saw many women join the workforce, which changed society. This shift helped spark movements for women’s rights.