And because the Shuttle had two launch sites, one on either coast. And because the different segments had different propellant profiles for different stages of flight. And because inspection and manufacturing in segments is a lot easier.
This is a reference to it requiring shipment to the launch site right? That shipment was more practical under bite sized chunks no?
Yep, shipped by rail, so that jobs were more evenly distributed, and thus cost twice as much, worked half as well, and killed way more people
This sounds like a good time to insert the very old joke about how the size of a horse's ass determined the size of the booster rockets.