The accurate descriptions of the book "The Prince" and its ideas and influence are:
- A good ruler should do whatever it takes to secure and unite his state.
- Machiavelli based his work on his study of classical history and on what he saw around him.
The other two statements:
- A ruler should exercise power virtuously for the common good of his people.
- European rulers rejected the book's immoral ideas on governing.
are not accurate in the context of Machiavelli's work. "The Prince" is often interpreted as advocating for pragmatic or ruthless approaches to power, rather than purely virtuous governance, and many European rulers did embrace and apply Machiavelli's ideas.