Throughout history, there have been many events that led to mass evacuations. The reasons for people leaving their homes and fleeing vary, but such extreme measures are usually deployed in the face of a natural disaster, or even a man-made event such as war. Records of evacuations date all the way back to nearly 500 BCE, so it's not something new to humankind.
In this gallery, we take you on a journey through the most significant mass evacuations to have ever occurred. Click on and get to know all about them.