At the same time, on May 18, 1781, Incan clothing and cultural traditions, and self-identification as "Inca" were outlawed, along with other measures to convert the population to Spanish culture and government until Peru's independence as a republic. However, even after the death of Amaru, Native revolts still seized much of what is today southern Peru, Bolivia and Argentina, as Native revolutionaries captured Spanish towns and beheaded many inhabitants. In one instance, a Native-American army under rebel leader Túpac Katari besieged the city of La Paz for 109 days before troops sent from Buenos Aires stepped in to relieve the city.