i believe it is because then in the 19th century the population was very bad into
Chat with our AI personalities
life have become easier ,and more simple it really is better then 100 tears ago but still,people prefer the old days ,besides everyone's different!
of course
Poorer than it was 100 years ago but still the eighth biggest economy in the world.
it changed the world by helping people improve/help their eyesight, so they can see better. also, because of how many people use them & how popular they are today. they have grown into a giant thing. Katherine Blodgett made the eyeglasses that we use today; it is more modern than others. The eyeglasses she made were non-reflective! So, it didn't glare. Which was a good thing. And, plus, without them, half of the people on this Earth wouldn't see as clearly as other people. :)
the longest history in the world, the chilvilization started back more than 6,000 years ago.