Why would an army want to Flank it’s Opponent, or attack it’s opponent from the other side, instead of head on?

this article will :

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same

1 problem today is that it caused to much crime americans are born with freedom and liberty and not being restricted to things causing lots of crimes because there free until proven guilty and commit a crime

the pursuit of order has only made people hate order causing race profiling and   more

3 it has to much liberty the liberty is to much because it causes to much crime and aswell hacking and letting hackers open to numerous things such as stealing cards and more

sorry its a lil late, but the answer is d. the rotation 180° about z'