So once again, this is valuable for trade, but it's also valuable for coordinating military power. So in large part to these revolutions that we're seeing, and we will study more in other videos, the map of the world looks very different roughly 150 years later. This is what the world looks like around the year 1900. And you immediately notice some differences from that previous map. Most of those colonial possessions in North and South America are now independent, but you notice something dramatic happening in Africa and in much of Asia. Africa has now been carved up by the colonial powers. In this salmon color, you see where the British have control in much of South Africa and then around Egypt and Sudan and parts of East Africa.