Hyderabad accepted the alliance and bore heavy costs for maintaining British troops.

Residents and envoys of the Governor-General negotiated and enforced subsidiary treaties.

To guarantee payment for troops, rulers sometimes ceded territory or revenue to the British.

The policy allowed Britain to exert influence and station troops without full annexation, reducing administrative burden.

The Nizam's acceptance in 1798 secured the Deccan for British interests and was a major diplomatic victory.

The alliance prohibited independent diplomacy; the British effectively controlled external relations.

Lord Wellesley actively used Subsidiary Alliances (and military support) to make states dependent on Britain.

Rulers surrendered independent foreign policy and could not form alliances without British approval.

The resident managed the state's external relations and had strong influence over internal policy.

Rulers were required to dismiss European (non-British) officers and allow only British influence via a resident.