He is Omar Ibn Al-Khattab (May God be pleased with him).
Second caliph H. Umer Farooq RA.
It was during the reign of the second Rightful Caliph Hazrat Omar RAU the Islam spread far and wide.
The first Caliph was Abu Bakr Assidik.
The Muslims leader (Caliph) after Abu Bakr was Omar Ibn Alkhattab (as the second Caliph).
The first main 4 Caliphs (who are called the 4 orthodox caliphs) are:HAZRAT ABU BAKR SIDDIQUE (Raddi Allah Unho)The First Caliph of IslamHAZRAT UMAR FAROOQ (Raddi Allah Unho)The Second Caliph of IslamHAZRAT USMAN GHANI (Raddi Allah Unho)The Third Caliph of IslamHAZRAT ALI MURTZA (Raddi Allah Unho)The Fourth Caliph of Islam
A caliph
Caliph meaning the representative of God on earth
The second caliph is Abu Jafar :)
SUNNI ISLAM believed that any Muslim could become Caliph if he was a good community leader; heredity was not terribly important.
Hadhrat Mirza Masroor Ahmad is a Caliph (Khalifa). He is the current Caliph for the Ahmadiyyah Movement of Islam
The Muslim rulers after prophet Muhammad death in year 632 AD were called Caliphs. The first Caliph was Abou Bakr. The Caliph after death of the Caliph Abou Bakr was Omar Ibn Al-Khattab. That is why he was the second Caliph.
simply by being justice imam & khalifah to them Muslims