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.
Slavery is a prominent part of United States history. Slavery has existed for thousands of years in many cultures, but in the United States, the institution seemed to have been perfected. It also came at a time of enlightenment, when many began to see slavery not as the necessity that many felt it was, but as an evil exploitation of men.