Earlier quoted context omitted.
Yes. Imperialism (as a system of extracting wealth from poor countries) continues to exist, but China has a working countermeasure. You can see similar with Vietnam.
Sure if you water down the term of imperialism then yes. It is then incumbent on you to prove "imperialism" among the worst performers economically. What imperialism plagues liberia and ethiopia and honduras and papua new guinea
Similarly in WWI, it was invaded by Australia and only gained independence in 1975.
Before that, it was split between Germany, the British and Dutch.
Before that, its population was impressed and blackbirded by European traders.
Like cargo cults literally developed there lol