Walls are extremely limiting, both for people left outside and for people inside of the walled area.
For people who are isolated within a country, the effect can be that of not knowing much about the outside world. An isolated country is also at high risk for dictatorships and autocracies, as people are more easily manipulated and cannot leave the country if they are unhappy. On the other hand, for those who are not allowed to enter the country, the risk can be being unable to enjoy the benefits of that country, being unable to reunite with people in that territory and being unable to discover what the country has to offer. A good example is that of North Korea, and the fact that South Koreans have often been unable to reunite with their families due to strict travel controls (although not precisely a wall).
On May 8, 1541, south of present-day Memphis, Tennessee, Spanish conquistador Hernando de Soto reaches the Mississippi River, one of the first European explorers to ever do so.
Answer: What was the strategy behind the development of the Hunley submarine? It was developed as payback for the blockade on the South, and used to lead a. surprise attack on port cities in the North.
