Pedro II was the last tsar of..?

Dom Pedro II (1825 – 1891), nicknamed "the Magnanimous", was the second and last monarch of the Empire of Brazil, reigning for over 58 years. He was born in Rio de Janeiro, the seventh child of Emperor Dom Pedro I of Brazil and Empress Dona Maria Leopoldina. Pedro II steadfastly pushed through the abolition of slavery despite opposition from powerful political and economic interests