Which invention was most important in revolutionizing the meat industry?
1)air brakes
2)knuckle couplers
3)the pullman car
4)the refrigerator car

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation:

warfare was the primary means of cultural transmission in both regions.