It's impossible to pinpoint a specific country as the "discovery" of lead. It's been known and used by humans for thousands of years, predating the concept of modern nation-states.

Here's what we know:

* Lead is a naturally occurring element: It's found in the Earth's crust, meaning it was available for use wherever humans lived.

* Early uses: Lead artifacts have been found dating back to 7000 BC in Anatolia (modern Turkey) and even earlier in the Neolithic period in Europe.

* Ancient civilizations: Lead was widely used by ancient civilizations like the Egyptians, Romans, and Chinese for various purposes, including plumbing, coinage, and even cosmetics.

So, while we can't say definitively where it was "discovered," lead has been a part of human history for a very long time, known and utilized in many parts of the world.