I believe the answer is: build huge monuments and temples and develop infrastructure
At that that time, the slaves owned by the Egyptian government was forced to work in building infrastructures such as pyramids, altars, ceremonial buildings, temples, and several mechanisms that are necessary to sustain the Agricultural process in egypt.
On top of this, some of them often traded or given as some sort of presents to other empire to build bilateral relationship with Egypt.
Vladimir Lenin
Nikita Khrushchev
Karl Marx
The leader of the Russian Revolution was Vladimir Ilič Lenin, who was also the leader of the Communist Party. In the wake of the First World War, he took advantage of the already existing weaknesses of the Russian Empire and gained the authorities with his Bolsheviks in 1917. This event was preceded by many rebellions and revolutions, such as the Revolution of 1905, when dissatisfied peasants and workers demanded economic reforms. Emperor Nicholas showed no intention of seriously addressing existing economic problems, which led to the October Revolution.