Hi! The most major and important impact the abolitionism had was turning the slavery into an emotional and political issue. Many writers were affected by this. The wrote to try and stop all slave trades and set them free. - I hope this helps.
P.S - I attached down below a link that will explain more of what i was stating above, Its a government website. So the information on it will be true and secured. I hope this helps.
The concept of "agent" has many variations and interpretations..the sign for "person" is sometimes initialized with the letter "P" but in everyday signing there is generally no reason to use the "P" handshapes. You can just use "flat" hands..When you use the PERSON-[agent] sign in combination with other signs you should always use "flat" hands (not "P"-hands)