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Well, the term imperial comes from empire, so the imperial era lasted until no country had or was trying to gain an empire. You should take colonies into account, but it is important to recognize that WWII was an attempt by Germany, Japan, and co. to establish empires. By that definition, the modern imperial era extended from the 15th to the 20th century. You may also take into account the more ancient Roman, Persian, and French (Alexander the great) empires. I am fairly certain my answer will be supported by any history textbooks you may come across.
What else can I help you with?
How long did imperial china last?
Imperial China lasted from about 221 B.C.E to 1644 C.E
How long did the dinosaur era last?
they last like 65million years
Chinese society especially in the imperial era is known as?
Chinese society especially in the Imperial Era was known as a civil society.
How long did the era of good feelings last?
forever
How long did the Renaissance era last?
About 300 years
How long did the classical era last for?
Around 70 years
How long did AD last for?
almost 2011 years (its the era we are in)
For how long did that era last?
The era lasted approximately 150 years.
How long did the era of the cattle drives last in Oklahoma?
20 years
How long should 180 ml taking 1 tsp daily last?
Using an Imperial tsp, it should last 30 days.
Who was the last czr of russia?
The last czar (or, tsar) of Imperial Russia was Nicholas II (1868-1918). Deposed in 1917 by Communist revolutionaries, Nicholas II died one year later at the hands of the same revolutionaries, thereby ending the imperial age in Russia and beginning the Communist era.
How long did the romantic era last in fashion?
This period lasted from about 1800-1850.
