3D printing uses computer-aided design (CAD) to create three-dimensional objects through a layering method. Sometimes referred to as additive manufacturing, 3D printing involves layering materials, like plastics, composites or bio-materials to create objects that range in shape, size, rigidity and color.
It was the Puritans the ones who established it
He started going around talking about it and telling them how thye was and how they celebrate <span />
The Ghana Empire amassed large volumes of gold and resources, expanded trade among nations near and far, established a structured court system and introduced standard military organization.<span> The Ghana Empire, also called the Kingdom of Ghana, enjoyed significant power from the ninth century to the 11th century A.D. Kings and rulers discovered significant gold deposits in the kingdom's lands, such as Mali, Mauritania and Senegal, and the newfound wealth helped rulers establish a powerful, prominent kingdom.</span>