Arquivo Histórico Ultramarino Arquivo Histórico Ultramarino The Arquivo Histórico Ultramarino (est. 1931) of Portugal preserves archives related to the Portuguese Empire. It is located in the on da Boa-Hora in the city of Lisbon, near the in the parish of Alcântara. The of the governmental Ministry of Science, Technology and Higher Education administers the archives. Prior to 1973, the Overseas Ministry oversaw it. Among its holdings are records created in 15th-20th century related to colonial Angola, Brazil, Cape Verde, Guinea, India, Macau, Mozambique, São Tomé and Príncipe, Timor, Uruguay, and other locales. As of 1970 the materials were grouped as pre-1833 (mostly from
Brazil–Uruguay relations intervened, initiating the Uruguayan Civil War, or "Guerra Grande" (Great War). Manuel Oribe was eventually defeated in 1851, leaving the "Colorados" in full control of the country. Brazil followed up by intervening in Uruguay in May 1851, supporting the "Colorados" with financial and naval forces. In February 1852, Rosas resigned, and the pro-"Colorado" forces lifted the siege of Montevideo. Uruguay rewarded Brazil's financial and military support by signing five treaties in 1851 that provided for perpetual alliance between the two countries. Montevideo confirmed Brazil's right to intervene in Uruguay's internal affairs. The treaties also allowed joint navigation on the Uruguay