The possessive form for the singular noun emperor is emperor's.
example: The one who really rules the castle is the emperor's wife.
Emperors' The word emperor, like almost all English word, merely requires an s to be affixed to the end to become plural. And, like almost all English plural nouns ending with an s, the apostrophe simply goes after it rather than before (as in the case of singular possessives).
The emperor ruled the county. He was the emperor of China. Some countries have a president or a monarch instead of an emperor.
The government form in China in the middle ages was Dynasties. They were NOT successful.
The Roman emperor had to answer to the pope.
The emperor will see you now. The emperor is showing off his new clothes.
The possessive form is Amos's.
The singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The singular possessive form is week's.
The singular possessive form is contralto's.
The singular possessive form is aircraft's.
The singular possessive form is frontiersman's.
The singular possessive form is speculum's.
The singular possessive form is herd's.
The singular possessive form is heart's; the plural possessive form is hearts'.
The singular form for the noun families is family. The singular possessive form is family's.
The singular possessive form of wolves is wolf's.