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.
But Lincoln had sound reasons for doing it the way he did. Slavery existed because of state laws, and the president had no power to declare state laws invalid. The Supreme Court could declare a state law unconstitutional, but nothing in the Constitution as it existed in 1863 made slavery unconstitutional.