In behavioral sciences, the use of metatools plays a crucial role.

She was going through puberty and was confused by the changes in her body.

World War I was a large-scale war that lasted from 1914 to 1918.

World War II lasted from 1939 to 1945.

Let's pray that World War III does not occur.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.