3- why have most centrally planned economies failed?

I dont have an answer but hope this helps

Explanation:

There are two main thoughts for me when it comes to economy. capitalism and socialism. They both have some upsides and some downsides. Capitalism makes people want to invent and has more economic expansive capabilities the downside is that a small amount of people own everything and their is rich and poor. Capitalism not everyone owns every thing and everything (recources) is distributed somewhat more evenly and nobody is poor downside everyone depends on the government and no one wants to invent.

evelyn "champagne" king

love come down

explanation:

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.