Answer: boom
Explanation: hope this is right :)
This invention was a commercial failure. Edison resolved that in the future he would only invent things that he was certain the public would want. ... This gave Edison the money he needed to set up his first small laboratory and manufacturing facility in Newark, New Jersey in 1871.
found at: https://www.nps.gov/edis/learn/historyculture/edison-biography.htm
Sorry I don't know just need comments to get points, desperate need of help with maths home work xx
Warm currents move from the equator to the poles.