One of the main reasons why poor nations suffer still was the colonials policies. Giving away land (that obviously did not belong to them) to corrupted locals to get support and steal the countries resources.

Wherever you go in the 3rd world you see talented people, rich resources (egypt, Africa, Asia...etc) but you see corrupted politicians and the common reason is that all these nations were colonized.

Look at Qatar...we were not colonized and thats why (thank god) we dont have that much corruption and resources are distributed a bit fairly.