The “Divide Africa” category is bit disingenuous. Essentially the only parties that participated were the British, Germans, French, Spanish, and Portuguese,

Austria-Hungary, Russia, Denmark, the Netherlands, Sweden/Norway, the Ottoman Empire, and the United States all send dignitaries, but it was essentially just for observer status, since none of those countries established any African holdings, or made territorial claims at the conference.

However, those countries still participated under the banner of their respective colonial empires, with the US for example sitting under the title “American colonial empire”. And were complicit in what happened.