1) The American Civil Rights Movement, led by figures like Martin Luther King Jr., fought for equal rights and helped bring about significant social and legislative changes.

2) The International Monetary Fund (IMF) and the World Bank are international financial institutions that work to promote global financial stability and economic development.

3) The Amazon rainforest produces more than 20% of the world's oxygen.

4) The world's largest desert is the Antarctic Desert, covering around 5.5 million square miles.