 Complete the following phrase:  Influenced by liberal revolutions occurring in Europe, the Liberal Revolution of 1820 started in Porto. The revolutionaries demanded the return of John VI of Portugal, who had transferred the Portuguese Court to the Portuguese colony of Brazil since the French invasions of Portugal, it also demanded a constitutional monarchy to be set up in Portugal. In 1822 a liberal constitution was accepted, partly through the efforts of the liberal assembly of Porto Junta do Porto. When Miguel of Portugal took the Portuguese throne in 1828, he rejected this constitution and reigned as an absolutist monarch, initiating a 