Slavery in Japan was, for most of its history, indigenous, since the export and import of slaves was restricted by Japan being a group of islands. The export of a slave from Japan is recorded in a 3rd-century Chinese document, although the system involved is unclear.
Delta, Colorado. The City of Delta is the Home Rule Municipality that is the county seat and the most populous municipality of Delta County, Colorado, United States. The population was 8,915 at the 2010 census, up from 6,400 at the 2000 census. The United States Forest Service headquarters of the Grand Mesa, Gunnison, and Uncompahgre National Forests are located in Delta.
In 1870 the Texas legislature voted on a bill for the creation of Delta County. One of the sponsors for this bill was L. W. Cooper of Houston and it was Cooper the county seat was named after. The town was granted a post office the following year and Cooper incorporated in 1881. The population in 1885 was 300. Further growth was enhanced by the construction of the Texas Midland Railroad.