An impressive GIF shows what world population looked like in 1800, 1900, and 2000, as well as what the United Nations projects for 2100. Here’s what Vox had to say about this population growth:
Between 1900 and 2000, the size of the global population skyrocketed (from 1.7 to 6.1 billion), mostly in the developing world — Asia, Africa, and South and Central America. This reflects huge victories in global development and the spread of economic growth and technology previously reserved for Europe and North America. Once again, this has geopolitical significance: Being larger and richer gives countries more resources to draw on in international politics. We’re talking about the rise of countries like China and India today for a reason.
Being larger and richer may seem like a benefit to nations, but what about the people actually living in them? A basic principle of international development called the demographic dividend suggests that smaller families, not growth, promote development.