city's intellectual tolerance made Amsterdam a centre for the European free press.
The 17th century is considered Amsterdam's Golden Age, during which it became the wealthiest city in the world. Ships sailed from Amsterdam to the Baltic Sea, North America, and Africa, as well as present-day Indonesia, India, Sri Lanka, and Brazil, forming the basis of a worldwide trading network. Amsterdam's merchants had the largest share in both the Dutch East India Company and the Dutch West India Company. These companies acquired overseas possessions that later became Dutch colonies. Amsterdam was Europe's most important point for the shipment of goods and was the leading Financial Centre of the world. In 1602, the Amsterdam office of the Dutch East India Company became the world's first stock exchange by trading in its own shares.
Amsterdam lost over 10% of its population to plague in 1623–1625, and again in 1635–1636, 1655, and 1664. Nevertheless, the population of Amsterdam rose in the 17th century (largely through immigration) from 50,000 to 200,000.
Amsterdam's prosperity declined during the 18th and early 19th centuries. The wars of the Dutch Republic with England and France took their toll on Amsterdam. During the Napoleonic Wars, Amsterdam's significance reached its lowest point, with Holland being absorbed into the French Empire. However, the later establishment of the United Kingdom of the Netherlands in 1815 marked a turning point.
The end of the 19th century is sometimes called Amsterdam's second Golden Age. New museums, a train station, and the Concertgebouw were built; in this same time, the Industrial Revolution reached the city. The Amsterdam-Rhine Canal was dug to give Amsterdam a direct connection to the Rhine, and the North Sea Canal was dug to give the port a shorter connection to the North Sea. Both projects dramatically improved commerce with the rest of Europe and the world. In 1906, Joseph Conrad gave a brief description
