Final answer:
José María Morelos led the Mexican War of Independence, emphasizing the principle of social equality, including the abolition of slavery and the caste system.
Step-by-step explanation:
José María Morelos, a mestizo priest, led the second wave of the Mexican War of Independence and focused on addressing social inequality. His leadership was marked by the revolutionary ideal of social equality, advocating for an end to the caste system, the abolition of Indigenous tribute, and land reform.
In 1813, he convened a congress to create Mexico's first constitution, highlighting these goals in a document titled 'Sentiments of the Nation.'