It is very difficult to define where and when brass was made intentionally, for the first time in history.
Maybe, some prehistoric copper craftsman might have noticed some unusual golden effects when smelting ores containing copper and zinc, and have repeated the experiment.
The earliest evidence for deliberate brass-making lead to the Middle East, in the 3rd millennium BC.
After that, it is rare for a copper-zinc brass to contain less than 8% zinc.
Therefore someone, around that time, must have found the “perfect alloy” and started making hardware and tools with it, appreciating brass’ malleability and versatility.
Less expensive than gold and more malleable than bronze, brass is now used across multiple industries to create all sorts of goods.
If correctly maintained, brass products can last for many years.