Sunni
they finished by different political events.
The First Crusades traveled east and conquered 3/5 cities in Eurasia. Two cities in Europe were not conquered, and three cities in the Asia Minor were conquered. They traveled through the Holy Roman Empire and Byzantine Empire.
Hazrat Ali (RAU). But the Shiaism sprang up much later. Hazrat Ali (RAU) remained faithful to the first three Rightful Caliphs. He was an active member of the advisory council (Shoora) of the Muslims during the reign of first three Rightful Caliphs. He was the fourth Rightful Caliph.
Egypt
First 4 Caliphs were not missionaries to Africa , but many other companions of prophet were .
The first four Caliphs after Muhammad, more commonly known as The Rightly Guided Caliphs were Abdullah ibn Abi Quhaafah (known by his nickname, Abu Bakr), Umar ibn al-Khattab, Ali ibn Talib and Uthman ibn Affan, in this order of succession.
The Umayyad Caliphate came after the four Rightly-Guided Caliphs.
The first Four Caliphs are termed "Rashidoon" the Rightful. The first two were the Fathers-in-Law of the Holy Prophet SAW and his closest friends and associates. The latter two were the Sons-in-Law of the holy Prophet SAW. The first three were agreed upon by all Muslims (Companions), the fourth Hazrat Ali RAU was disputed as he became Caliph in very disturbed days of Islam.
They conquered Poland first
The Sunni's believe after Muhammad's death, he left his followers with his book Quran and the culture. They also had 3 ''khalifahs'' after Muhammad's death. The Shiites believe after Muhammad's death, he left his followers with his book Quran and another follower that gave guidance, Imam Ali.That was later on that the shiites formed the doctrine of Imamat. Hazrat Ali (RAU) expressed his pact of obedience (BA"AT) to the three Rightful Caliphs and acted as an active counsel/advisor to them. He was the Fourth Rightful Caliph. He never claimed that the first three were not Rightful Caliphs. He was not a coward to keep this in his heart and serve the first three rightful Caliphs.
they ruled differently