What was the greatest fear of lincolns election? the country would be forced to follow republican leaders. the country would have one voice on slavery. the country would be supported by foreign interests. the country would be divided?

The correct answer should be
the country would be divided

It was believed that Lincoln would be the last president of the US because the Confederacy would secede and form their own country so there would no longer be the United States of America. The fear of division was never stronger than at that period in time.