fly taken over by farm workers and others from all over the state. Isaac Arriaga is assassinated here in 1921. The city is attacked again by rebels calling themselves “Delahuertistas” in 1924. The fight mostly occurs in the main plaza with the city defended by General Lopez, Garcia and Avila Camacho.
During the 1960s the street vendors were removed from the historic center of the city, and palm trees that lined the Avenida Madero, the main east-west road, were cut down. In 1966, there was a student revolt at the state university which was put down by the army.
The 1970s and 1980s are marked by construction including the Periferico bypass ring around the city. During the 1980s, damage due to geographic faults, exacerbated by falling water tables from groundwater pumping is noticed. This problem is similar to problems faced by other cities on the Trans-Mexican Volcanic Belt such as Querétaro and Mexico City.
In 1991, the city was declared a UNESCO World Heritage Site due to its well preserved colonial architecture. In 2001, street vendors were moved again from the historic center to make the area more tourist-friendly. Traffic was rerouted from here as well with the construction of new bypasses. In 2006 and 2007, many of the plazas and gardens in the historic center were remodeled.
In 2009, the Morelia metropolitan area was tentatively established as consisting of the municipalities of Zinapécuaro, Álvaro Obregón, Charo, Tarímbaro and Morelia. This initial determination was made the by Secretary of Urbanism and Environment, with further refinements to be made as the municipal presidents of these entities meets to discuss limits, strategies and further actions. One of these actions has been to establish a formal commission to administer the
