What if Rivadavia arrived a year early and Argentina joined the Central Powers after Coronel?
Short answerThe ships would be powerful locally, but Argentina would face British sea power, regional opposition, and severe economic pressure.
NotesThe Rivadavia class is described as exceptionally powerful in its region but still vulnerable to larger-gunned British capital ships. A war would also threaten Argentine trade with Britain and expose it to regional opponents. Brazil, Chile, and Uruguay would have strong reasons to align against Argentina with British support. Earlier delivery therefore creates a local naval advantage without solving the strategic and economic isolation that follows intervention on the Central Powers' side.