Portable Network Graphics. Portable Network Graphics (PNG /ËpÉªÅ/) is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most widely used lossless image compression format on the Internet.
The slavery in the United States was a paradox because it contradicted the American ideal of freedom C. Slavery is one the black chapters in mankind history. It shows barbarian, immorality and misunderstanding.
Native American slavery has traditionally been treated by scholars as a secondary matter that is of historical interest because of its relationship to other more common forms of exploitation, or because it was a curious but minor variation on the more important enslavement of African peoples on colonial plantations.