Dr B.V Raman writes that the great astrologer Varaha Mihira in his book Brihat Samhita has given the list of countries governed by signs and planets. We give the same here 

ARIES: France, Switzerland, England, Denmark, Germany, Lower Poland, Syria, Burgundy- Naples, Capua, Marseilles, Birmingham, Florence

TAURUS:  Greater Poland, Persia, Ireland, Asia minor, Georgia, Part of Russia, Holland, Greek Archipelago, Leipzig, Dublin

GEMINI: South west England, USA, Flanders, Lower Egypt, Belgium, Sardinia, wale, Tripoli, London. Versailles, Melbourne, Plymouth, Sanfrancisco

CANCER: Holland, Scotland, Newzeland, Paraguay, New York, Istanbul, Tripoli, Algiers, Venice, Manchester, Amsterdam

LEO: Italy, Sicily, Part of France, Chaldea, bohemia, Damascus, Bristol, Canton, Philadelphia Chicago and Mumbai

VIRGO: India, Iran, Turkey, Brazil, Crete, Assyria, West Indies, Jerusalem and Losangeles

LIBRA: Some Parts of India, Portugal, Austria, Alaska, Japan, Tibet, Burma, Siam, China

SCORPIO; Bavaria, Judea, Catalonia, Norway, morocco, Washington, Dover, Liverpool, Baltimore

SAGITTARIUS: Spain. Arabia, Hungary, Madagascar,

CAPRICORN: Part of India, Macedonia, Afghanistan, Mexico, Oxford, Brussels

AQUARIUS: Sweden, Some parts of Arabia, Russia, Denmark, Lower Sudan,

PISCES: Normandy, Portugal, Egypt, Nubian, Sahara, Alexandria

As per Vedic astrology the signs given are the Ascendant’s for the countries mentioned and when afflicted the country suffers some calamity.