Complex sentence: On 20 September 1835, General Bento Gonçalves captured the capital, Porto Alegre, beginning an uprising against the perceived unfair trade reinforced by the state government; the state president fled to the city of Rio Grande, two hundred kilometers to the south.
Split into simpler sentences: On 20 September 1835, General Bento Gonçalves captured the capital, Porto Alegre, beginning an uprising against the perceived unfair trade reinforced by the state government. The state president fled to the city of Rio Grande, to the south.