Jim Crow laws were state and local laws enforcing racial segregation in the Southern United States. Enacted after the Reconstruction period, these laws continued in force until 1965.he Jim Crow laws and the high rate of lynchings in the South were major factors in the Great Migration during the first half of the 20th century. Because opportunities were so limited in the South, African Americans moved in great numbers to northern cities to seek better lives, becoming an urbanized population.
PNG was designed for transferring images on the Internet, not for professional-quality print graphics, and therefore does not support non-RGB color spaces such as CMYK. PNG files nearly always use file extension PNG or png and are assigned MIME media type image/png.
PNG format is a lossless compression file format, which makes it a common choice for use on the Web. PNG is a good choice for storing line drawings, text, and iconic graphics at a small file size. JPG format is a lossy compressed file format. This makes it useful for storing photographs at a smaller size than a BMP. JPG is a common choice for use on the Web because it is compressed. For storing line drawings, text, and iconic graphics at a smaller file size, GIF or PNG are better choices because they are lossless. JPEGs are for photographs and realistic images. PNGs are for line art, text-heavy images, and images with few colors.