BC and AD are abbreviations for before Christ and Anno Domino mean before the Christ's birth after the Christ's birth
Standard DVDs. 1  Region 1: U.S., U.S. Territories, Canada, and Bermuda. 2  Region 2: Japan, Europe (excluding Russia, Belarus and Ukraine), Greenland, South Africa, Swaziland, Lesotho, Egypt and the Middle East. 3  Region 3: Southeast Asia, South Korea, Taiwan, Hong Kong and Macau.
DVDs and DVD players are created for specific regions of the globe due to variations in releases and markets. To properly play a DVD, the DVD player must be the same region as the disc being played. A number in a globe icon identifies the region of both the disc and the player. This region number can be found on both the discs packaging and the disc itself.