Answer:
electricity
Explanation:
Electricity meant that the factories did not need water to power their facilities.
The following that is NOT a type of mass transportation is : B. Car
Even though average car could carry up to 6-8 people, car is included in a type of personal transportation.
I'm a bit rusty on this portion of history, sorry, but I believe the answer you're looking for is because George Washington wasn't in Philadelphia at the time of the signing. He was a general in the army and during the time of the signing, he was defending the country in another part of colonies.
Hope this helps!
Rocky mountains?i think this is correct but i am not a 100% sure. hope this helps
