Monarchies Exist in Many Nations to This Day
In the era of the Roman Empire, various nobility titles were employed for those operating within a sovereign nation. These titles were often conferred by the Emperor, who oversaw this and other important matters of state.
Titles Contributed to Diplomatic Issues
Titles were sometimes not universally recognized, which led to diplomatic issues. This became less of a concern during the 19th century, where many smaller monarchies joined together, thereby creating larger and more powerful entities.
With the exception of a few nations, most monarchies were dismantled after WWII. Those that remained were typically governed by nobility, such as a king or queen. Of the twelve monarchies still in existence, seven are kingdoms, while the rest are comprised of more esoteric systems of government, such as the Vatican’s Papacy.