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.
Everyone thinks the Black Death was caused by bubonic plague. THE DISEASE that spread like wildfire through Europe between 1347 and 1351 is still the most violent epidemic in recorded history. It killed at least a third of the population, more than 25 million people.