Why was Abraham Lincoln such a controversial figure?

his stance on slavery

Explanation:

Abraham Lincoln was the president that ended slavery with the emancipation proclamation. the south didnt  like this and claimed it was against states rights. this started our civil war.    

Because he helped end slavery but some people liked slavery.

accomplishment : zachary taylor’s was a national war hero in his battle in an mexican war

explanation:

he was known as a national war hero for his battles in the mexican war, taylor was elected as the 12th president of the united states in 1849. he led the nation during its debates on slavery and southern secession. after serving only 16 months in office, taylor died from cholera morbus on july 9,