Tolong jelaskan mengenai Monark Kerajaan Bersatu dari Persatuan Kerajaan Portugal, Brasil, dan Algarve

Elevação do Brasil a Reino Unido a Portugal e Algarves Secretary of Education of Rio de Janeiro, accessed on 8 June 2008.

Reino Unido (1815-1822) Chamber of Deputies of Brazil, accessed on 8 June 2008.