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.
Last Updated: 08/04/2014 - 17:23. Slavery was not new to Africa. Traditionally, slavery was used as a punishment for serious crimes. However, although slavery was a punishment for criminals, they were, in the main, treated fairly well by their masters.This was not the case once trading in slaves became 'big business'.s the demand for slaves grew, the demand for slaves by Europeans grew. They exchanged guns for slaves and African chiefs, eager to possess guns which would give them power over rival chiefs, began inventing new crimes for which the punishment was slavery.