<l:1,50>Abolitionists<e> and <l:1,57>Cyber Ninjas<e> can aid an uprising in a foreign <l:6,104>city<e> with <l:6,99>slaves<e>. This attack always succeeds and causes slave revolts. The amount of <l:6,92>gold<e> required to perform this action depends greatly on the city's distance to capitol, the number of slaves in the city and the gold owned by the target Civilization.