In examining the question of white slavery in colonial America the strands of servitude seemed to stretch beyond the realm of easily identified eras, such as industrial forced labor of children remaining legal and actual in New York City until 1923, and the fact that hundreds of thousands of supposedly free American men were forced to die in four wars, spanning almost 20 of 100 years, with only the second of these four conflicts offering the remotest possibility of an invasion of the United States homeland, which, in purely objective terms, makes U.S. war-making efforts in the 20th century more slave-based on a functional level than the efforts of Imperial Rome—described by all historians as a slave society—which relied on professional soldiers, not conscripts—to expand its territory. Conscript soldiers can be explained as nothing other than slave-soldiers. Only at that point where information technology and media sophistication had expanded to Orwellian levels of national consensus, and military technology had enabled the military to employ nine or more support personnel to a single combatant, were the rulers of America able to abandon military conscription in favor of a Roman-style volunteer force.
1584-1677: Early Plantation Era [invasion]
1678-1753: Middle Plantation Era [exploitation]
1754-1814: Late Plantation Era [reformation, beginning with mass flight of white slaves and ending in the massive expansion of black slavery]
1815-1923: Industrial Era [gradual, fiscal enslavement of all Americans, switching from gross, torture-based servitude to universal, taxable, wage slavery, with last child slaves released in 1923 from factories in New York]
1919-Present: Prohibition Era [emotional, media-facilitated enslavement of all but a negligible segment of Americans, along with the State prohibition or control of all intoxicants]
There will be a next era, either a reactionary collapse of the current slave matrix or an evolution of a superior hive-like system.