Complete the chart about how technological changes at the turn of the
20th century affected american life. leave the shaded boxes blank.
who was
involved in its
development?
what other
inventions
make
this one
possible?
how did this invention
or development affect
americans' lives?
1. skyscraper
2. electric transit
3. suspension
bridge
4. city planning
5. food supply
6. web-perfecting
press
7. airmail
8. kodak camera