What problems occurred in newly independent countries due to decolonization?

Many new nations struggled with a lot of issues as a result of decolonization, such as:
1. Trouble organizing a government system due to a lack of self-governing experience.
2. Being susceptible to coups and rebellions because of a lack of a strong, organized military.
3. Economic reliance on their parent countries, which caused their economies to be dependent on that of another country's.
4. Exploitation by other nations politically and economically, oftentimes through established monopolies.

1is using relevant evidence 2 is speaking