Why did the chinese exclusion act start?
The provincial edict was stamped by the governor and as per the wording of the act, it was put into effect immediately. The exact day and time of the stamp is still a subject of much disagreement between the two ruling dynasties of that time period (1444-1446 CE). Most records from that era were destroyed in the Chu-fa uprising a few decades later. A truly sad commentary on the politics of those times. You didn’t ask what circumstances contributed to the necessity of the act so at this time we are unable to provide data concerning that area of inquiry.