Settlement at the lower end of the fen stream Rotte (or Rotta, as it was then known, from rot, 'muddy' and a, 'water', thus 'muddy water') dates from at least 900 CE. Around 1150, large floods in the area ended development, leading to the construction of protective dikes and dams, including Schielands Hoge Zeedijk ('Schieland’s High Sea Dike') along the northern banks of the present-day Nieuwe Maas. A dam on the Rotte or 'Rotterdam' was built in the 1260s and was located at the present-day Hoogstraat ('High Street').
On 7 July 1340, Count Willem IV of Holland granted city rights to Rotterdam, which then had approximately 2000 inhabitants. Around 1350 a shipping canal, the Rotterdamse Schie was completed, which provided Rotterdam access to the larger towns in the north, allowing it to become a local transshipment centre between Holland, England and Germany, and tourbanize.
The port of Rotterdam grew slowly but steadily into a port of importance, becoming the seat of one of the six 'chambers' of the Vereenigde Oostindische Compagnie (VOC), the Dutch East India Company.
The greatest spurt of growth, both in port activity and population, followed the completion of the Nieuwe Waterweg in 1872. The city and harbor started to expand on the south bank of the river. The Witte Huis or White House skyscraper, inspired by American office buildings and built in 1898 in the French Chateau-style, is evidence of Rotterdam's rapid growth and success. When completed, it was the tallest office building in Europe, with a height of 45 m (147.64 ft).
During World War II, the German army invaded the Netherlands on May 10, 1940. Adolf Hitler had hoped to conquer the country in just one day, but his forces met unexpectedly fierce resistance. The Dutch army was finally forced to capitulate on May 15, 1940, following Hitler's bombing Rotterdam on May 14 and threatening to bomb other Dutch cities. The heart of Rotterdam was almost completely destroyed by the
