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.
An epidemic is 10,000 infected in a week. 5,000 dead the second week, with another 50,000 infected. And the doctors and hospitals have run out of flu medicine. And the flu vaccine is actually creating a flu epidemic. For crying out loud. The world has over 7.5-billion people.