This resulted in an increase in slave revolts, especially in the 1860s and 1880s, which forced The federal government to alter the method to keep the place secure.[thirteen] Slavery was lawfully abolished in 1888. Brana Itaipu, najveća svjetska hidroelektrana prema proizvodnji energije i druga najveća po instaliranom kapacitetu (14 000 https://uzmatildeos.wizzardsblog.com