Hans Lippershey that time he became a master lens grinder and spectacle maker and established a shop. He remained in Middelburg until his death, in September 1619. Hans Lippershey is known for the earliest written record of a refracting telescope, a patent he filed in 1608. His work with optical devices grew out of his work as a spectacle maker, an industry that had started in Venice and Florence in the thirteenth century, and later expanded to the Netherlands and Germany. Lippershey applied to the States General of the Netherlands on 2 October 1608 for a patent for his instrument ""for seeing
The Netherlands in World War I citizens were in demand as spies, as they could travel freely throughout Europe. Some of these spies were executed for espionage. Haicke Janssen and Willem Roos, two unemployed Dutch sailors, were executed in 1915. Exotic dancer and courtesan Mata Hari, convicted of spying for Germany in France, was executed in 1917. In total seven Dutch citizens were executed by the British, French, and Germans. Many more were imprisoned. The Netherlands in World War I The Kingdom of the Netherlands was neutral during World War I. This stance arose partly from a strict policy of neutrality in international affairs that started