With fires raging and people fleeing to the sea in Australia, and evacuations in the Philippines in the face of volcanoes, I think about all the instances of weather and climate that have changed the shape of world populations. The few that I know about are certainly samples of many.
I started thinking about this when I read that half of the European immigrants to North America from Plymouth to the formation of the U.S. were indentured servants. Europe was caught in the throes of the Little Ice Age. It was cold and crops failed or yielded little. Fathers would take their sons and daughters to the dock and turn them over to a ship’s captain. The captain would sail them to the “new” world and recover their passage with their sale to waiting farmers and settled and prosperous families.
In my research, I read Brian Fagan’s The Great Warming, a history of population ebbs and flows with planet warming Read The Article