Short answers, pulled from the story.
The first tin bronze foil discovered at Pločnik in Serbia dates to the mid-5th millennium BC. This artifact predates the conventional start of the Bronze Age by 1,500 years. It challenges the belief that bronze technology originated solely in the Near East.
The Bronze Age ended around 1200 BC due to a combination of environmental and social factors including drought, famine, and the Sea Peoples. The exhaustion of Cypriot forests prevented the production of bronze, while the Thera eruption in the late 17th century BC may have triggered earlier instability. These events led to the collapse of the Hittite Empire and the disintegration of the Aegean civilization.
The Shang dynasty used bronze primarily for ritual purposes rather than weapons. They produced elaborate bronze vessels known as dings for sacrificial ceremonies, often featuring the taotie motif. These vessels contained inscriptions that documented events, dates, and the names of artisans.
The Unetice culture flourished in Central Europe from 2300 to 1600 BC and was characterized by rich burials with gold and bronze grave goods. The Urnfield culture followed with cremation burials and the use of bronze weapons and tools. The Atlantic Bronze Age included cultures in the Iberian Peninsula, France, Britain, and Ireland.
The Seima-Turbino phenomenon originated in the Altai Mountains and led to a rapid migration across 2,000 kilometers into northeast Europe, China, Vietnam, and Thailand. This migration occurred in five to six generations and spread metalworking technology and horse breeding to regions from Finland to Thailand.