WORLD HISTORY

Detailed explanation-1: -The year 2000 marked the end of the second millennium (= a period of 1 000 years) since Christ was born. The years before Christ are described as BC (= before Christ), for example, 55 BC, or BCE (= before the Common Era).

Detailed explanation-2: -(ii) B.C. stands for ‘Before Christ’, meaning before the birth of Christ. For example, a time period written as 200 B.C. means 200 years before the birth of Christ.

Detailed explanation-3: -The alternative to using BC and AD would be to use BCE, which means “before Common Era, ‘’ and CE, which means “Common Era.” Despite removing Christianity from the name, BCE and CE are still tied to the original Christian idea of BC and AD.

Detailed explanation-4: -"B.C.” stands for “before Christ.” The system labels years based on a traditional notion of when Jesus was born-with the “A.D.” denoting years after his birth and “B.C.” designating the years that predate his birth.

Detailed explanation-5: -B.C. stands for “Before Christ, ‘’ as in Jesus Christ. It indicates the number of years before the birth of Jesus (although Jesus himself was born in 4 B.C.). A.D. stands for the Latin phrase Anno Domini. That translates to “In the year of our Lord.” It’s used to mark years after the birth of Jesus.

Detailed explanation-6: -This calendar era is based on the traditionally reckoned year of the conception or birth of Jesus, AD counting years from the start of this epoch and BC denoting years before the start of the era.