Answer:
1,199 years between B.C. and A.D
Explanation:
It really depends on from what time of the year you are trying to calculate from. From January 1st, 400 B.C. to January 1st 700 A.D. it would be 1,199 years.
You add 400+700=1,100
But you have to subtract for the zero year.
1,100-1= 1,199
So your answer would be 1,199 years.