The abolitionist understood slavery was very important to the economy of the south

But should be abolished

Explanation:

Abolitionist were a group of American citizens who wanted the institution of slavery to become illegal in the US. This group was often lead by free blacks, former slaves, and religious citizens in the North. Many abolitionist made the moral argument that slavery was an evil institution that dehumanized African Americans within the US. This call for the abolition of slavery ended up causing increased political and economic tensions between the Northern and Southern states.

because it !

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: