Why did Argentina’s provinces resist political control by Buenos Aires after independence?

After Argentina gained independence, the provinces resisted political control by Buenos Aires primarily due to a fundamental power struggle between centralist and federalist ideologies.12

The porteños (residents of Buenos Aires) advocated for a strong central government, or unitario system, which would consolidate national authority in the capital. This was largely driven by the city's control over the customhouse, the nation's primary source of revenue. By maintaining this status as the country's exclusive entrepôt, Buenos Aires held significant economic leverage that the provinces sought to challenge.1

In contrast, the provincianos (those outside Buenos Aires) fought for federalism, which emphasized virtual autonomy for each province. Their resistance was fueled by several key demands:1
* Economic Autonomy: Provinces demanded tariff protection for their local industries, which were often stifled by the centralist trade policies of Buenos Aires.1
* Political Sovereignty: Provincial caudillos (military leaders) rejected centralized constitutions that threatened their local power and governance.31
* Resource Distribution: The provinces sought an end to the capital's monopoly on customs receipts, which created a severe financial handicap for the rest of the nation.14

This conflict persisted through decades of civil strife until the status of Buenos Aires was finally settled in 1880 by making the city a federal territory and the national capital.142