Maybe 5 hours............................................
Improved transportation greatly affected farming since it allowed vital resources to be quickly shipped to the farmer, and for the farmer to export his goods far more easily to locations further away.
The answer i believe is the letter d
The last one is false I believe. Very shortly after the site was uncovered, archaeologists came to excavate it, and the year after it was discovered they started building a museum on the site. Safe to say robbers probably would've had a hard time pillaging it when the whole archaeological community had their attention fixated on it.