Saul hated Christians until he was converted.
Saul was a Pharisee and was very zealous for the traditions of his people (Gal. 1:14). Stephen's sermon apparently stimulated Saul's persecution of the church (aka the followers of Jesus)....
americans
Ananias. See Acts 9:10-17.
It could be either. "Pres" is an abbreviation for "President." Although you should probably use a period at the end of "Pres." like shown.