This refers to the Gilded Age, first published in 1873 by Mark Twain.
The key issue dividing these three classes were mainly political.
The Mugwumps were members of the Republican party, who refused support to the nominee of 1884 and supported the Democratic candidate.
The Half-breed were rivals of the Stalwarts in the party control. They supported civil service reform and merit appointments to government posts while the Stalwarts favored the spoils system of political patronage. These were the result of a split in the Republican party.
Interpersonal skill would be the answer you are looking for.
Hope I could help!!
Edit
Decision making should also be one of them.
C. Your anxiety isn’t always stable it all depends on the person. It can change
Because it all happened 14,000 years ago, it is irrelevant to modern life
