Describe the steps that resulted in the development of trench warfare

First, trench warfare was developed because the military noticed that they lose a lot of people because they fought in big numbers which led to more deaths when shot with rifles or other artillery. Mainly, because of the failure of the Schiefflen plan, trench warfare came into the picture. Since they were lacking in number and they have to spread in order to defend, they decided to devise a plan of infiltration and give them a surprise attack - but this failed. So, they built trenches to protect the military from being killed en masse.

Explanation:

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.