Why did european merchants concerned about the supply gold and silver

European merchants concerned about the supply of gold and silver because, during mercantilism, both precious metals became the main value shelters used by countries to accumulate wealth. In addition, the imposition of the gold standard as a means of monetary valuation implied that countries would tend to accumulate this metal to give strength to their respective currencies and, therefore, to their economies.

Then, according to the mercantilist economic organization and the gold standard, the more gold and silver a country had accumulated in its reserves, the stronger its economy would be and the ability to establish commercial conditions for the rest of the nations.

no because it could make the world a terrible place to live in.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail