Main focus of the war in the west

Early in the war, the focus was on two key states: Missouri and Kentucky. The Union cause would have been crippled if either had been lost. Missouri was kept in the Union primarily due to Captain Nathaniel Lyon's successes, particularly his victory at Boonville in June.

Explanation:

a drastic rise in oil prices ended decades of postwar.

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.