Answer: He is important Because of 3 things
Step-by-step explanation:
The 4 things are
1: He is a famous companion of Prophet Muhammad (SAW)
2: He is the 2nd caliph after Abu bakr (RA)
3: Muhammad (SAW) gave him a nickname it was al farooq, which means the one who can tell between right and wrong.
4: He was promised paradise
Extra
Umar was the 2nd caliph
He was not a muslim at the begining he was bad to the muslims but before the hijra (Migration) With hamza (RA). Umar was realated to prophet muhammad because his sister hafsah married Muhammad (SAW).
And his other sister married the famous companion said ibn zayd.
He was the best companion after abu bakr (RA).
He with other ten people were promised paradise