I'm not sure what exactly a circuit court is. I need to learn more. What is a circuit court?
A circuit court is when judges travel to different places and understand cases in a region.
Okay, I think I understand. What kind of cases do they do? 
I'm not exactly sure but I find it fascinating that Abraham Lincoln was an attorney who rode the court in Illinois!
Oh did he? I didn't know that. Were any other famous historical figures circuit court judges or attorneys?
Assize of Clarendon). Thus, the term "circuit court" is derived from the practice of having judges ride around the countryside each year on pre-set paths − circuits − to hear cases. Especially on the United States frontier, a judge might travel on horseback along with a group of lawyers. Abraham Lincoln was one such attorney who would ride the circuit in Illinois. In more settled areas, a stagecoach would be used. Eventually, the legal caseload in a county would become great enough to warrant the establishment
after we have all passed away, but, if we are really lucky, it may just happen in an enormous tank of minutely scrutinised water currently located down a mineshaft in Japan. If and when it does, physicists the world over will jump up and down with excitement, because they will have learned something truly profound. Exactly what would take too long to explain, which is a relief, because I'm not at all sure I understand it. Read the book and try for yourself... I am in a better