Do not open that link it takes all your information
Depends on how you look at it.. They were desperate and had to stop the British from gaining support. But it wasn't confirmed that It was carrying weapons, there were civilians on it so theres good reasoning why they sunk it. The Germans did not let civilian casualties get in their way really as seen with their bombing of cities and use of chemical warfare.
The Lusitania. It was torpedoed without any warning off the south coast of Ireland. 1,198 out of the 1,959 passengers/crew drowned.
The crusades Greatly affected the feudal system and began to lose it hold on society which eventually led to the Renaissance. Knights had to sell their land to be able to live, due to the feudal system crashing. So if they were not able to make enough by selling their land, they were left broke. They were also forced to serve nobles in personal armies.