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.
The continental United States can be divided in nine basic geographic regions. Outside of the continental United States, Alaska and Hawaii can be considered two additional regions. Each region varies slightly in its cultural traditions, history, climate and geographic features, and more. One way to divide the United States into geographic regions would create just four regions: the East Coast, Midwest, South, and West.