The correct answer is the Euro.
Within the EU, members of the Eurozone use the EU as their primary currency.
According to the figure, I believe it’s 16.
The answer is: <span>technology, plows, steam engines
The development of </span><span>technology, plows, steam engines allow mass production of a certain product become a lot faster and cheaper.
This transform the economy from relying on herding and agriculture into focusing mainly on industrial manufacturing.</span><span />