Is the custom in the U.S. Senate of refusing to confirm a presidential appointment to office opposed by both senators from the state of the appointee or by the senator of the Presidents party
The correct answer to this open question is the following.
Senatorial courtesy in deciding state judicial nominations is the agreement United States Senators have to support another member of the Senate when opposing the appointment to the federal office of a nominee of the US President from the state of that Senator. It is an unofficial political custom. In other words, Senatorial courtesy considers that no candidate can be appointed to a position in the government without the "OK" check of the senators that belong to the same home state as the nominee.
Because B.C stands for Before Christ and A.D means the year of our lord so historians took a turn from the traditional christian time method and made it B.C.E (before common era) and C.E (common Era)