Background:
The Mughal Empire was a powerful empire that ruled over the Indian subcontinent from the 16th to the 18th century. During its peak, it was known for its administrative efficiency and centralized governance. The empire was divided into several provinces, each of which was headed by a governor or viceroy appointed by the emperor.

Nizam-ul-Mulk:
Nizam-ul-Mulk, whose real name was Asaf Jah, was a prominent Persian nobleman and administrator who served in the Mughal Empire during the early 18th century. He hailed from a noble Persian family and had a distinguished career in the Mughal court.

Appointment as Wazir:
During the years 1722 to 1724, Nizam-ul-Mulk held the appointment of Wazir in the Mughal Empire. The position of Wazir, also known as the Prime Minister or Chief Minister, was one of the most important administrative positions in the empire. The Wazir was responsible for overseeing the governance of the empire, advising the emperor on matters of state, and managing the bureaucracy.

Roles and Responsibilities:
As the Wazir, Nizam-ul-Mulk had several important roles and responsibilities. These included:

1. Administrative Duties: Nizam-ul-Mulk was responsible for the day-to-day administration of the empire. He supervised the various departments and offices of the government, ensuring efficient functioning and coordination.

2. Policy Formulation: He played a crucial role in formulating and implementing policies for the empire. This included matters related to taxation, justice, trade, and defense.

3. Advisor to the Emperor: Nizam-ul-Mulk served as a trusted advisor to the Mughal Emperor. He provided counsel on important matters, such as diplomatic relations, military campaigns, and succession.

4. Bureaucratic Reforms: Nizam-ul-Mulk implemented various reforms to improve the efficiency and effectiveness of the Mughal bureaucracy. He introduced measures to curb corruption, streamline administrative procedures, and enhance revenue collection.

Contributions and Legacy:
Nizam-ul-Mulk's tenure as Wazir was marked by significant contributions to the Mughal Empire. His administrative reforms helped stabilize the empire and improve governance. He also played a crucial role in strengthening Mughal control over the Deccan region, which was a key area of contention at the time.

Furthermore, Nizam-ul-Mulk's appointment as Wazir was a testament to his skills, experience, and influence in the Mughal court. It demonstrated his standing as a trusted advisor and capable administrator.

In conclusion, Nizam-ul-Mulk held the appointment of Wazir in the Mughal Empire from 1722 to 1724. As Wazir, he had important administrative responsibilities, served as an advisor to the emperor, and implemented significant reforms. His tenure as Wazir contributed to the stability and strength of the Mughal Empire during a critical period.