The dominant official language of Albania is Albanian, which is a standardized form of the two main dialects, Gheg and Tosk. A dialect of Greek is also spoken by the Greek ethnic minority. Other minority languages include Serbian, Macedonian, Romani, and Aromanian. Albania has a parliamentary representative democratic political system with executive power held by the government. While most Albanians are nominally Muslim or Christian, the country has no official religion and religious intermarriage is common. Albania lies on the Balkan Peninsula between latitudes 39 and 43 degrees north and longitudes 19 and 21 degrees east, with coastlines on the Adriatic and Ionian Seas. The economy was historically based on agriculture