[speekinout]

Yet the former colonial states of the U.S., Canada, Australia, India, Hong Kong, Singapore, and Taiwan (if it counts in this line of thought) are hardly seeing their annual GDP decline as is most all of Africa

There are key differences between those states and Africa. The US, Canada, and Australia were settled by immigrants. The native populations were overwhelmed and pushed aside. The others have overwhelming majorities of one ethnic group, and India still has problems with poverty in areas dominated by an ethnic minority.
Other countries that were formed by some rather unthinking Western notions of where borders should be drawn have also had economic problems. Iraq and Israel are two.

[Southack]

"There are key differences between those states and Africa. The US, Canada, and Australia were settled by immigrants. The native populations were overwhelmed and pushed aside."

Rubbish. What "native populations" were pushed out of Singapore, India, and Hong Kong?!

You see, all of this "blame Colonialism" nonsense is counter-productive. You can point to nation after nation that has shrugged off colonialism and become successful, so simply being colonized isn't sufficient excuse for national failures centuries later.