5 Contributing Factors to WW1. I believe that the factors that led the world to World War 1 were Imperialism, Nationalism, Militarism, Alliances and Assassination, as each played its own role in contributing to the beginning of the Great War.
brainliest please
I believe the answer is: increase in food supply and disease immunity.
Prior to 2000 years ago, society experience massive shortage in food supply which cause a lot of people died due to hunger which always keep the population low.
The fact that there is no vaccine also contribute to the low population because it cause a lot of death for infants and children before they grow up.
Craigmillar Castle Edinburgh, Scotland hope this helped
