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.
In a similar manner as DVD, Blu-ray Disc format also has a region coding and copy protection system. This means that players sold in specific regions of the world adhere to a specific region code - However, unlike DVD, there are fewer regions and many Blu-ray Discs are, in fact, not always region coded.