The port traffic in Rotterdam owes its importance to the Rhenish-Westphalian heavy industry.

Holland also has its own industry. In North Brabant are some cloth and linen weaving mills, cotton mills and Kattunmanufakturen, in Groningen and Drenthe shipbuilding is operated. The country has also brickworks, paper mills, tobacco pipes factories, etc. Thousands feed on fish, especially herring fishing. The port traffic in Rotterdam owes its importance to the Rhenish-Westphalian heavy industry, which here has a closer sally port to the sea, as in the German North Sea coast. (Photo by: Carl Simon/United Archives/Universal Images Group via Getty Images)