The term 'It's Under Imperial Dominion' can be solved by the crossword clue 'EMPIRE' with a 6 letter answer. This phrase is referring to a situation in which a country or region is under the control of an EMPIRE, meaning that it is subject to the laws and regulations of the ruling EMPIRE. This could refer to a historical situation, such as the British EMPIRE's control over many countries during the 19th century, or a current situation, such as China's control over Hong Kong.