Please explain a consumer-driven economy?

Please explain a consumer-driven economy?

America's economy is 70% consumer-driven. Would you say that very
"backwards" nations like Afghanistan is ~100% consumer-driven, since
they don't have any exports (neglecting the effects of the black
market)?

1. What are the advantages/disadvantages of this type of economy?
2. What are the qualities of this?
3. Finally, what other nations have a consumer-driven economy?
.

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