What contributed most to advances in making tools jewelry and weapons?

Advances in Metallurgy, particularly the discovery and refinement of metals like bronze and iron, significantly contributed to the development of tools, jewelry, and weapons. The ability to shape and alloy these materials allowed for stronger, more durable items with intricate designs. Additionally, the innovation of techniques such as casting and forging enabled artisans to create more complex and functional designs, enhancing both utility and aesthetic appeal. Lastly, cultural exchanges and trade facilitated the sharing of knowledge and techniques across regions, further accelerating advancements in craftsmanship.