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.
A Global Killer. The Spanish influenza epidemic, uniquely lethal in attacking young, healthy bodies, killed at least 20 million people worldwide, including an estimated 50,000 Canadians. The flu was spread through bodily fluids and moved quickly through the population.