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.
Is this from vietnam if sao they were under heavy fire
Mostly due to the ideas of Manifest Destiny. They started going westwards with the desire to span the United States from coast to coast, and then they started going worldwide. The idea behind it is that the United States were destined to help the world become free and democratic like they were so they started helping people worldwide in rebellions against colonialism or in similar affairs.
All these countries have a common is that these all are located on Mediterranean sea.
Mediterranean Sea is a sea of Atlantic ocean <span>on the west to Asia on the east and separates Europe from Africa, it is almost completely enclosed by the land and during ancient time, it was an important route and it was allowed for trade, for traders and travelers.</span>