Final answer:
Miguel Hidalgo y Costilla is the revolutionary leader who initiated the Hidalgo Revolt, also known as the Mexican War of Independence, in 1810.
Step-by-step explanation:
The revolutionary leader who initiated the Hidalgo Revolt, also known as the Mexican War of Independence, on September 15, 1810, was Miguel Hidalgo y Costilla. Hidalgo, a creole priest, gave a speech known as the 'Grito de Dolores' or the 'Cry of Dolores', which called for a rebellion against Spanish colonial rule. He raised an army of landless peasants, but they were eventually defeated by a professional army of Spanish troops. Hidalgo was convicted of treason and executed, but his movement continued under the leadership of José Maria Morelos.