Before humans existed, there were other creatures that looked like monkeys and apes. These creatures lived a long time ago and they were called hominids. The hominids were different from the monkeys and apes because they could walk on two legs instead of four, which is called bipedalism.
The human revolution happened a long time ago when the first humans appeared on Earth. These humans were very different from the hominids that came before them. They had bigger brains, which means they could think and figure things out better. They also had the ability to make tools and use them to hunt for food.
Scientists believe that the human revolution happened because of a variety of reasons. One reason is that the humans were able to adapt to changes in the environment. They could find food and shelter in many different types of places, which allowed them to survive and thrive.
Another reason is that humans started to live in groups, which helped them to work together to solve problems and take care of each other. They also developed language, which allowed them to communicate and share ideas.
Over time, the humans continued to evolve and develop new skills and abilities. They moved out of Africa and spread all over the world, adapting to different environments and cultures. Today, humans are the most advanced creatures on Earth, with the ability to create incredible technology and achieve amazing feats.