How many years did the Caliphate of Hazrat Abu Bakr (R.A) last? 

1. Two
2. Three
3. Four
4. Five

Abu Bakr’s (R.A.) caliphate lasted 2 years, 3 months (632-634 CE), yet he crushed the Ridda Wars, expanded into Iraq/Syria, and established the Bayt al-Mal (treasury). His compact but impactful rule set precedents for Islamic governance.