Why was the abolishment of slavery the biggest impact of the civil war

Answer it was not the biggest impact

Explanation:

Slavery played the central role during the American Civil War. The primary catalyst for secession was slavery, especially Southern political leaders' resistance to attempts by Northern antislavery political forces to block the expansion of slavery into the western territories.but only 38%

This attitude is also reflected in a Pew Research Center poll from that same year, which found that nearly half (48%) of all Americans agreed: the Civil War was fought over states' rights. Only 38% of those surveyed attribute the conflict to slavery

this isn't a question and if you're going to list things be kind and use commas.

all of the