The phrase "in the Christian era" refers to the time period after the birth of Jesus Christ. Alternative synonyms for this phrase include "AD (Anno Domini)", "after Christ", "common era", "current era", and "modern era". These synonyms are used to describe the timeline of events in history that took place after Jesus' birth, and are often used in academic or historical texts. Each synonym has its own unique connotation and implication, but all refer to the same time period. Regardless of the terminology used, the Christian era has deep roots in human history and continues to shape our modern world.