Imperial Japan - 14th century
The Soviet Union - They mostly annexed poor territories. I am not sure, how much wealth they extracted but 2 bads don't make 1 good.
In comparison, European Imperialism started at 1400 ended just 70-years ago.
Till then the world had a global currency, industrialization had started. Heck, we even had structures representing modern companies, banks, and the stock market.
So, yea something which ended roughly 70 years ago is too old on nation timescale?
According to your argument, is it ok to rob your grandfather, so that your father and you are born in near poverty and judge you by your success today?
No one can deny, Europe has robbed other nations of their prosperity.