Question

in the period before the birth of Christ count the years – and in the period after the birth of trees take out the years​

Answer 1

Answer:

Many people use the abbreviations B.C. and A.D. with a year (for example, A.D. 2012). B.C. refers to "Before Christ," and the initials, A.D., stand for Anno Domini, which is Latin for "In the year of our Lord." This system was devised by a monk in the year 525.