Front

Invention and marketing of the light bulb revolutionized home and industry by providing inexpensive, safer daylight for 24 hours.

Back

The light bulb, once refined and marketed, revolutionized both home and industry since it extended inexpensive and safer daylight simulations to twenty-four hours.

Front

Steel and oil industries' impact on development?

Back

Led to inventions like the internal combustion engine and electric light bulb.

Front

Similarity of Rockefeller & Carnegie

Back

Both used vertical integration in their businesses.

Front

Contrast between Ellis Island and Angel Island operations.

Back

Immigrants at Ellis Island faced limited delays; those at Angel Island often faced unreasonable delays.