Answer:
A massive amount of new technologies were developed in the 20th century. Technologies such as electricity, the incandescent light bulb, the automobile and the phonograph, first developed at the end of the 19th century, were perfected and universally deployed during the 20th century. These things have been good, not until the 21st century, when technology has been starting to consume our children's brains and have them turn against their future.
Step-by-step explanation:
I recommend you paraphrase that because if your teacher wants to make sure it is not from the internet, she will know if you copied my answer and pasted it, just in case.m
Hope I helped:D
-Jazz