Hanover was founded in medieval times on the south bank of the river Leine. Its original name Honovere may mean "high (river)bank", though this is debated (cf. das Hohe Ufer). Hanover was a small village of ferrymen and fishermen that became a comparatively large town in the 13th century due to its position at a natural crossroads. As overland travel was relatively difficult, its position on the upper navigable reaches of the river helped it to grow by increasing trade. It was connected to the Hanseatic League city of Bremen by the Leine, and was situated near the southern edge of the wide North German Plain and north-west of the Harz mountains, so that east-west traffic such as mule trains passed through it. Hanover was thus a gateway to the Rhine, Ruhr and Saar river valleys, their industrial areas which grew up to the southwest and the plains regions to the east and north, for overland traffic skirting the Harz between the Low Countries and Saxony or Thuringia.
In the 14th century the main churches of Hanover were built, as well as a city wall with three city gates. The beginning of industrialization in Germany led to trade in iron and silver from the northern Harz mountains, which increased the city's importance.
In 1636 George, Duke of Brunswick-L�neburg, ruler of the Brunswick-L�neburg principality of Calenberg, moved his residence to Hanover. The Dukes of Brunswick-L�neburg were elevated by the Holy Roman Emperor to the rank of Prince-Elector in 1692, and this elevation was confirmed by the Diet in 1708. Thus the principality was upgraded to the Electorate of Brunswick-L�neburg, colloquially known as the Electorate of Hanover after Calenberg's capital (see also: House of Hanover). Its electors would later become monarchs of Great Britain (and from 1801, of the United Kingdom of Great Britain and Ireland). The first of these was George I Louis, who acceded to the British throne in 1714. The last British monarch who ruled in Hanover was William
