BC, because that means "before Christ". So 250 years BC is 250 years before Christ was born.
AD means anno Domini, or "after death" (of Christ). The year 77 AD is 77 years after christ died. This year is 2008 AD.
Alphabetically, AD is first; in terms of time, BC is first.
bc comes first because bc stands for before christ
The last date of BC was 1 BC, then the first date of AD was 1 AD, there was no zero.
4000 BC; time goes down in BC not upwards like AD. The higher the number in BC the earlier it is
BC comes first because BC means before AD and AD means After something cant really remember LOL!!
BC, before Christ came before AD, anno domini
BC goes before 0 on the timeline. AD goes after. BC stands for "before Chris" as if Jesus Chris. becouse it is befor jesus was born. AD stands for after death. i think it is obvious why.
AD is after and BC before
1500 BC Did come first because it is almost like a countdown to AD (after death) which is current (2010 AD)
BC comes first as in Before Christ, AD is Anno Domini or after Christ
BC since BC stands for "Before-Christ" AD stands for "After-Death" reffering to Jesus' death.
There was no year zero century or year zero. 1 AD immediately followed 1 BC. The first century AD immediately followed the first century BC. There was no century between them.