C) a unified European currency did not come about until the creation of the Euro -- instituted as an "invisible" currency in 1999 for trading but not available for common use (i.e., as a physical currency) until 2002.
Answer:
I have no idea about this, please.
Can I get any help from others?
Answer:
In Rome, Augustus was a hero. In 31 BC, he became Rome's first emperor. The transformation from republic to empire was complete.
Explanation:
Yes, it has happened around five times.