You searched for: dare desu ka ( English - Japanese )
The definition of Imperialism according to google is a policy of extending a country's power and influence through diplomacy or military force. But a more thorough definition is this: Imperialism is the domination by one country of the political, economic, or cultural life of another country or region. - it's more than just military or government. The reason I wanted to clarify that is because old and new imperialisms happened in an attempt to dominate economically. Old imperialism happened in 1500s to early 1800s. Under Old Imperialism, European powers would build a series of trading stations in their attempt at accumulating wealth.
Best Answer: It is changing all the time. Back in the 1920's when the Rockefellers and Israel Sack were buying up everything, it had to be pre-Empire period (before 1820 or so). This school of thought persisted into the 1960's. At some point, it was defined by law as anything over 100 years old.