A: The main cause of rapid population growth is when there are more births than there are deaths, which is referred to as a natural increase. Other causes of ... Full Answer >
Spanish flu (1918-1919). The influenza pandemic of 1918-1919 killed more people than the World War I, at somewhere between 20 and 40 million people. It has been cited as the most devastating epidemic in recorded world history. Known as Spanish Flu or La Grippe the influenza of 1918-1920 was a global disaster.
The global flu outbreak of 1918 killed 50 million people worldwide, ranking as one of the deadliest epidemics in history. For decades, scientists have debated where in the world the pandemic started, variously pinpointing its origins in France, China, the American Midwest, and beyond.