caption: The image shows a man pushing a cart with a sign on it, which is believed to be a representation of the 15th century German invention of wheat. The man is wearing a long-sleeved shirt and trousers, and is holding a wooden object in his hands. The cart is made of wood and has four wheels, and the sign on the cart reads "15th Century German Invention of Wheat". The background of the image is a light blue color, and there is a watermark in the bottom right corner.