In a timeline, what does BC stand for? A. It indicates a break at the century mark.
B. It indicates a break in even spacing of events.
C. It shows that a date occurs on or after year 1 on the Latin calendar.
D. It shows that a date occurs before year 1 on the Latin calendar.

D

Explanation:

BC is often called Before Christ and is called that because Christ, Jesus, was born in. after his death. it is referred at AC, or After Christ (ACE after common era if you aren't religious.)

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration