Why did Mark Twain refer to the late 19th century as The Gilded Age?

because that period was glittering on the surface but corrupt underneath

set times for each and always know when there coming

according to the map, most industrialization in europe occurred in the northwest.

the production of coal and lignite deposits was profitable throughout western europe.

the building of railroads transport goods throughout europe.

according to the map, the population trend indicates that more people are moving into cities.

northwest

coal and lignite depostis

railroads

cities