The 19th century.
72AD was in the 1st century AD.
The year 705 AD is in the 7th century.
1150 AD is in the 12th century.
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.
1876 was in 1876. This puts it in the 2nd millennium and 19th century.
The 19th century.
The 1st century AD.
It is the first century AD.
1st century AD
The 1st century AD.
It is the 18th century AD.
The first century AD.
The 1st century AD.
It is the first century AD.
The first century AD.
It is the second century AD.