caption: The image shows a group of people standing next to each other in front of a poster depicting the principal types of mankind. The poster is filled with vibrant colors and detailed illustrations of the people, each with their own unique features and characteristics. The text on the poster reads "Principal Types of Mankind" in bold, black lettering. The people in the poster are of various ages, genders, and ethnicities, and they are all smiling and looking directly at the viewer, conveying a sense of unity and strength.