Explain how changes in technology have affected american culture.

We may are more efficient and aren't needed for much stronger labour anymore.

Explanation:

We no longer need to tap morse code to communicate. We no longer need to compute large sums of data by ourselves. We no longer need to walk several miles just to reach a grocery store. Now we have cars, computers, cell phones, etc.

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.