3910 years
17,000 years
To calculate the years between approximately 430 BC and AD 1789, you add the absolute values of the two years since there is no year 0 in the transition from BC to AD. This results in 430 + 1789 = 2,219 years. Thus, 2,219 years passed between c. 430 BC and AD 1789.
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.
1400 bc or ad
16th
2000 BC
The 6th century BC began on the year 600 BC and finished on 501 BC. So from 2000 AD it is 2,500-2,600 years old.
Remembering that there was no year zero, the answer is 3499 years from 1500 BC to 2000 AD.
So long after the AD time that there is no AD in front or after it.
2000 BC - 250 AD
17,000 years
500 BC is older. Any time-frame declared as "BC" occurrs prior to any time-frame declared as "AD."
48 years.
To calculate how long ago 6 BC was, you add 6 years to the current year, 2023 AD, because there is no year 0 in the transition from BC to AD. Therefore, 6 BC was 2029 years ago.
The Ming dynasty lasted from 1368-1644 (so AD), and was followed by the Qing dynasty which lasted from 1644-1911. This was the last dynasty in China.
Remembering that there was no year zero, it was 4643 years between 2630 BC and 2014 AD.
As there was no year zero, the answer is 3499 years.