Inca plan
Buenos Aires had been the capital of the viceroyalty and intended to keep exerting that power, but in the lack of a king and its vertical authority, the provinces felt themselves equally capable to rule themselves.
After the return of Ferdinand VII to the Spanish throne, Manuel Belgrano and Bernardino Rivadavia were sent to Europe in a diplomatic mission, seeking support for the local governments.
[2] A possible candidate to be crowned after this proposal was Dionisio Inca Yupanqui, colonel in Spain and deputee at the Courts of Cadiz in 1812, mentioned in a mail from Chamberlain to Castlereagh.
[8] Sebastián was a member of the Spanish Royal House (the Bourbons) but lived in Rio de Janeiro with his maternal grandparent, Portuguese King Dom João VI).
[10] Although then-crown prince João had earlier considered establishing a court for Pedro Carlos in Buenos Aires or another Spanish viceroyalty, he now saw Carlota's ambitious plan as a threat to Portugal and Brazil and convinced his nephew to refuse the proposal.
[11] In May 1809 her husband managed to destroy her project by sending away Percy Smythe, 6th Viscount Strangford, the British Admiral who supported her would take her to Buenos Aires on his fleet.
[14] However, Anchorena would explain years later to Juan Manuel de Rosas, in a mail that was kept, that he supported the constitutional monarchy as a form of government but rejected the idea of crowning an Inca.
[17] José de San Martín manifested his support as well, but requested that there was a single head of state and not a government body composed of many people, such as the Juntas or the triumvirates that had ruled the United Provinces a short time ago.
The Prince of Lucca was a Bourbon related to the Spanish king; the French premiers Richelieu and Desolle supported the plan to disrupt British activities in the region.
The plan (both the Duke of Lucca and the marriage to a Brazilian princess) which had been approved by the United Provinces' parliament, came to nothing after the king of Spain - once again - refused to allow any member of his family as a monarch in one of his former colonies.
[25] Mitre considered the Inca plan an inconsistent project, without political or military foundation,[26] which San Martín supported merely in order to strengthen the government and gather allies.
From this perspective, they would have promoted monarchism because the social development of Hispanic South America was closer to feudal Europe than to its Early modern period.
The supporters of the Inca plan aimed to create a strong centralized government uniting all the Hispanic South America, whereas Buenos Aires attempted to keep its regional hegemony intact.
