Is it ensure, insure, or assure?
city, northeastern Denmark. It lies on the northeast coast of Zealand (Sjaelland), at the narrowest part of The Sound (Oresund), opposite Helsingborg, Sweden, with which it is connected by ferry. A toll for crossing The Sound was introduced in medieval times, and Helsingor, which had been a trading community since the 13th century, was granted a charter (1426). The city prospered until the toll was abolished in 1857.