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.
Answer:
The answer is D. Walking Purchase
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Spain was responsible for introducing livestock and cattle ranching in the south-west.
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Germany restricted its submarine warfare in response to international outage.
