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.
Quick Answer. The five regions of the United States are the Northeast, Southeast, Midwest, West and the Southwest. Each region has various English dialects. Each state in each region has its own government, and some religions are more prominent in some regions than in others. Wildlife and landforms are one of the separating factors between the regions.