Short answer they wanted to do solo music, Zane was the first one to leave due to stress and anxiety while on tour in 2015 , but they did recently go on tour again :)
Regarding your first activity, the first book of John perfectly matches the outline mentioned in your question, as it's often considered as the handbook of christianity (Jesus 101, if you may).
In relation to your second question, John was known as <em>The Apostle of Love </em>because of the transformation he had endured to become a loving pastor-like mentor in his writings and teachings. This was particularly special because John used to be somewhat reckless, aggressive and impulsive, to then become this humble, loving, compassionate man.
"c. social welfare programs" and "<span>e. communist spies in the United States" are the best options, since these two events brought the possibility of communism to the homeland. </span>
Slavery was prohibited in states north of the 36°36', and this line continued west until California, which was completely admitted to the Union as a free state. In turn, slavery was allowed beneath the line. Missouri, on the other hand, was allowed into the Union as a slave state. This allowed for the amount of slave and free states to stay balanced to preserve the status quo in Congress.