Negative effective like killing most of them but positive because the natives taught them how to hunt and get warm for the upcoming winter but a lot of them fell sick
The answer is a telegraph.
Especially known as the creator of the incandescent lamp, Thomas Edison was responsible for several devices important to the trajectory and development of mankind.
<u>One of the earliest inventions that made Thomas Edison famous, the phonograph was the first machine capable of recording and reproducing sounds.
</u>
The telegraph breakthrough occurred while Edison was trying to improve the telegraph transmitter when he realized that the movement of the paper tape through the machine produced a noise that resembled spoken words when played at high speed.
Its because science came to be that it relied on big projects. I hope I could help! :D
The answer is A. Defense
The Defense of Marriage Act.
