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

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.

this link can you answer the question.