In the broad sense, every country has an "aristocracy." most commonly this is the group presently controlling most of the wealth, which in places like Europe & the U.S. in mod
…ern times would (mostly) be/mean the business, banking, manufacturing people; but this can/does also include those with the abilities to govern and/or "charisma" to influence (the latter today evinced in the phenomenon of "celebrity" & its created "aristocracy"). If you mean today a country or nation that still maintains a separate privileged royal class like kings & queens and their considered relatives, England, Denmark, Holland, Japan & Saudi Arabia, to name a few. In most cases today this is mostly kept as part the country's historical tradition; the monarch & noble class being now essentially figureheads as part of a constitutional democratic government. In Saudi Arabia & a few other places, however, the monarch's/royals's still maintain themselves as a totally exclusive class with virtually absolute power, authority, wealth. ( Full Answer )