Which region of russia is an important mining region known for its gems and semiprecious stones?

st. petersburg region

ural region

volga region

russian far east

what are local authorities doing to fix the problem

explanation:

montesquieu took the view that the roman republic had powers separated so that no one could usurp complete power. in the british constitutional system, montesquieu discerned a separation of powers among the monarch, parliament, and the courts of law.

whats the question? im not quite understanding your question.

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.