day period Same as above, but only aggregate layoffs more than 30 days apart if they are related* and did not separately trigger the WARN Act* N/A Same as above; must measure average number of individuals employed over 90-day look back period to determine whether notice is or will be triggered Total closure of site At least 50 laid off in 30-day period, or in 90-day period as explained in the preceding box Any number, but there must have been at least 75
Slavery Timeline 1400-1500. A Chronology of Slavery, Abolition, and Emancipation in the Fifteenth Century. This page contains a detailed timeline of the main historical, literary, and cultural events connected with British slavery, abolition, and emancipation between 1400 and 1500.
Evidence of slavery predates written records, and is thought to have began sometime after the invention of agriculture about 11,000 years ago. Slavery existed in almost every ancient civilization including Egypt, China, Indian, Greece, the Roman Empire, and the pre-Columbian civilizations of the Americas.