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.
The population of Cameron County grew from just over 16,000 in 1900 to 77,540 in 1930; that of Hidalgo County climbed from 6,534 in 1900 to 38,110 in 1920 and just over 77,000 in 1930. By 1930 the population of the four lower Rio Grande valley counties exceeded 176,000.