[WalterBright]

The US saw an enormous improvement in the average standard of living of Americans in its first century. Scores of millions of people moved up from poverty into the middle class.

This happens in every country that tries it.

For an example of an economy entirely focused on resource extraction? The Arab oil nations.

For examples of highly prosperous nations that have no resources to speak of? Japan and S Korea. With free markets.

BTW, it wasn't possible in the 19th century to have a 40 hr week and vast welfare payments. The productivity wasn't enough to fund it.