Why is canada a federal republic?

pls need asap

n the latter days of the Rebellions of 1837 in Upper Canada, after Mackenzie and 200 of his followers retreated from Toronto to Navy Island, he declared a separate republic. He established an independent currency, and supplied his camp using the American supply steamer Caroline.[3] He recruited followers by promising 300 acres (120 ha) of land to any man that supported his cause.[4]He later included in his promise $100 in silver to his supporters, payable on May 1, 1838.[5]

corrupt also means cruel

"harry t. moore (1905-1951) – civil rights activist, leader, and the first martyr of the civil rights movement. fannie lou hamer (1917–1977) – leader in the american civil rights movement; co-founder of the national women's political caucus and freedom democratic party. james farmer (1920–1999) – congress of racial equality."