Describe one of them. Describe one early method for extracting gold from river beds. One famous ancient city owed its success to the fact that it owned a very large silver mine at a place called Laurion. Nuestra Se ora de la Pura y Limpia Concepcion was wrecked in a storm in 1638 as she sailed between Manila, in the Philippines, and Acapulco, in Mexico. Her wreck has been discovered and is loaded with beautifully crafted gold jewelry, Ming pottery, and spices.
Stone tools have some advantages over copper metal tools.
Mention an advantage of having money in the form of gold or silver coins. I'll save that for the final.