This led to a rise in slave revolts, especially in the 1860s and 1880s, which compelled the government to change the technique to maintain the nation steady.[13] Slavery was legally abolished in 1888. Brana Itaipu, najveća svjetska hidroelektrana prema proizvodnji energije i druga najveća po instaliranom kapacitetu (14 000 MW) https://zmmanuelatx.blogolize.com