They made it tough deliberately, that being to keep a provisional adjustment in control, couldn't make corrections that every one of the general population didn't concur with. The thought keeps political impulses from over freeing sound judgment and decision-making ability.
The colonial agreements mostly dealt with how the land was allocated to various lands and how the European forces would split Africa for their own gain. The so called Berlin conference also dealt with ending slavery by African and Islamic forces, and ended the gun for people slave trade.