Impuestos progresivos

The "History of Taxes: A Brief Overview - Tax Foundation"³ seems perfect for the history section. It covers the Civil War, 16th Amendment, and the re-establishment of the federal income tax.

Final External Links:

1. History: History of Taxes: A Brief Overview²
2. Practical Applications/General Context: Are federal taxes progressive?
3. OECD Data: A Comparison of the Tax Burden on Labor in the OECD, 2024
4. Criticism: The progressive income tax: unfair, unstable, unresponsive and inefficient (This is a PDF, I need to check if it's readable. Yes, it's a direct PDF from a policy center, looks legitimate and readable.)

Okay, all 4 external links are verified and ready. I can now proceed to write the article.

Auto-inferred terms:
[TERM]: Impuestos progresivos
[RELATED_TERM]: Impuestos regresivos
[TERM_CATEGORY]: Política fiscal

Internal Link Pool (will be used once each in the article):

1. Ingresos brutos
2. Tasa impositiva marginal
3. Equidad fiscal
4. Redistribución de la riqueza
5. Base imponible
6. Deducciones fiscales
7. Créditos fiscales
8. Tipo impositivo efectivo
9. Impuesto sobre la renta
10. Capacidad de pago
11. Política fiscal
12. Gasto público
13. Presupuesto gubernamental
14. Impuestos regresivos
15. Economía keynesiana¹