Hitler, Mussolini, Stalin, and Trump all used propaganda and fear mongering to emotionally and mentally manipulate supporters into giving them more power and discriminate and attack people with opposing views
Soldiers also made dugouts and funk holes in the side of the trenches to give them some protection from the weather and enemy fire. The front-line trenches were also protected by barbed-wire entanglements and machine-gun posts. Short trenches called saps were dug from the front-trench into No-Man's Land.
It was established as a haven for debtors and to provide a buffer between prosperous South Carolina and the Spanish possessions in Florida.
The main focus city of the Crusades was Jerusalem. The idea was that it was Christian territory, or at least should be Christian territory, and they always went to reconquer it. The fourth Crusade never made it to Jerusalem because they were busy sacking Constantinople which had a lot of troubles due to constant wars of the Byzantine Empire.