Chrysophyta perform photosynthesis underwater, supplying oxygen.

He is studying the history of African Americans.

My dream is to visit the Republic of South Africa.

We should always remember the power of Kannon in difficult times.

The Republic of South Africa is located at the southernmost tip of the African continent.

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.