In the 18th century, wars between Sweden and Russia twice led to the occupation of Finland by Russian forces, times known to the Finns as the Greater Wrath (1714–1721) and the Lesser Wrath (1742–1743), with which the precursor of the later Vyborg Province, known at the time as the "Old Finland", was born. It is estimated that almost an entire generation of young men was lost during the Great Wrath, due mainly to the destruction of homes and farms, and to the burning of Helsinki. By this time Finland was the predominant term for the whole area from the Gulf of Bothnia to the Russian border.