The Kinshasa Declaration on Great Apes is like a piece of paper with some very important things written on it. It's like a plan that many countries made together to help protect gorillas, chimpanzees, bonobos, and orangutans.
In the Declaration, the countries agreed to work together to stop people from hurting or killing great apes or taking them away from their homes in the wild. They also agreed to help take care of the apes that are in zoos or other places where they are safe.
The Declaration says that the countries will try to teach people to understand how important great apes are and why we need to protect them. They will try to help people who live near where the great apes live to find other ways to make money that don't harm the animals.
The people who signed the Declaration promised to keep talking to each other and working together to make sure that great apes continue to live in the wild for many years to come.