Introduction:
The ruler who introduced the concept of local responsibility for local crimes, holding local officials accountable for their failure to find culprits, was Sher Shah Suri. Sher Shah Suri was the founder of the Sur Empire in northern India and ruled from 1540 to 1545.

Local Responsibility for Local Crimes:
Sher Shah Suri believed in the concept of local responsibility for local crimes, which meant that local officials were held accountable for their failure to find culprits. This concept aimed to ensure that the local administration took effective measures to maintain law and order in their respective areas.

Reasons for Introducing the Concept:
1. Efficient Administration: Sher Shah Suri believed that by holding local officials accountable for crimes in their areas, it would create a sense of responsibility and motivate them to take prompt action against criminals. This would lead to more efficient administration and better law enforcement.

2. Quick Resolution of Crimes: By making local officials responsible for solving crimes, Sher Shah Suri aimed to ensure that cases were resolved quickly. This would help in maintaining public order and instilling a sense of security among the people.

3. Local Knowledge and Accountability: The concept of local responsibility recognized the importance of local officials' knowledge about their areas and the communities they served. By holding them accountable, it encouraged them to utilize their knowledge and resources effectively to solve crimes.

Impact and Significance:
1. Improved Law and Order: The introduction of local responsibility for local crimes led to improved law and order in the empire. Local officials became more vigilant and proactive in preventing and solving crimes, which created a safer environment for the people.

2. Increased Accountability: This concept increased the accountability of local officials, as they were directly responsible for maintaining law and order in their respective areas. It helped in curbing corruption and negligence among the officials, as they knew they would be held answerable for any failures.

3. Empowerment of Local Administration: By giving local officials the authority and responsibility to handle crimes in their areas, Sher Shah Suri empowered the local administration. This not only improved the efficiency of law enforcement but also promoted a sense of ownership and pride among the officials.

Conclusion:
Sher Shah Suri's introduction of the concept of local responsibility for local crimes was a significant step towards improving law and order in the Sur Empire. This concept increased the accountability of local officials and empowered the local administration to take effective measures against criminals. It had a positive impact on the overall security and well-being of the people.