Asia. The continent of Asia is the world's largest and most populous continent with over 4 billion people calling Asia home. Asia also contains the world's most populous country, China, and the world's largest country, Russia. Asia borders Africa and Europe to the west and the Pacific Ocean to the east.Asia.he continent of Asia is the world's largest and most populous continent with over 4 billion people calling Asia home. Asia also contains the world's most populous country, China, and the world's largest country, Russia. Asia borders Africa and Europe to the west and the Pacific Ocean to the east. Asia.