By the ancients the country was called regio romataica, from the abundance of aromatic plants which it produced.
After the Jugurthine war in 106, the whole of the regio Tripolitana, comprising Leptis Magna (Lebda), Oea (Tripoli), Sabrata, and the other towns on the littoral of the two Syrtes, appears to have been annexed to the Roman province in a more or less regular manner (Tissot ii.
It is probable that Burma is the Chryse Regio of Ptolemy, a name parallel in meaning to Sonaparanta, the classic Pali title assigned to the country round the capital in Burmese documents.
In the division of Italy by Augustus it formed the seventh regio and extended as far north as the river Macra, which separated it from Liguria.
In the Religious Peace of Augsburg the principle" cujus regio ejus religio "was accepted; by it a ruler's choice between Catholicism and Lutheranism bound his subjects, but any subject unwilling to accept the decision might emigrate without hindrance.