It suffered from raids of natives and foreigners, especially during the 14th century.
The fort was set up to protect early settlers from Indian raids.
Early residents lived in forts to protect themselves from Indian raids, but moved out by the late 1780s.
Many of those clients, who paid $75,000 a year for the service, were successfully defended from raids.
The area at one point came under threat from Viking raids.
A city wall was built for the first time in 1554 to protect the town from raids by Japanese pirates.
About 30-40% of this came from allied raids on Iraqi coastal targets.
They removed about $910,000 in August from raids throughout the city.
They initially built a fort for protection from Indian raids.
Only winter bad weather prevented the Japanese from year-round heavy raids.