July 1873.
After more than half a year of hard work, the entire section of the Central Canal's Canal No. 1 was completed, taking nearly four months longer than the East African government's planned schedule.
This was an unavoidable action because it was difficult to fully mobilize the enthusiasm of the natives. Historically, the most efficient labor period for sub-Saharan African groups was during the time Westerners engaged in slave plantation operations.
After African regions gained independence, Black countries generally fell into a trend of sudden productivity decline because without restrictions, they returned to the unrestrained era of primitive society.
This is not unique to Africa; India and Southeast Asia regions face similar issues. Although the acts of colonizers are unforgivable, in areas fully colonized, their work efficiency might be the highest in history.
