What if Argentina joined von Spee at the Falklands?

What if the Rivadavia-class battleships arrived a year earlier and Argentina attacked the Falklands alongside von Spee?

Argentina might strengthen the local attack, but British sea power could devastate its trade and encourage neighbouring states to enter the war against it.

Early delivery of the Rivadavia-class battleships and Argentine support for von Spee would create a much harder tactical problem around the Falklands. The British battlecruisers could avoid an unfavourable engagement, while Canopus might still fight from the harbour or have to be attacked. The larger consequence would be economic: Argentina relied heavily on British shipping and trade. British maritime pressure, possibly reinforced by Brazil, Chile, and Uruguay, could therefore place Argentina in severe strategic trouble even if its fleet won locally. The political context also differs from later disputes: the Falklands claim became more prominent under Argentina's post-Second World War dictatorships than it had been in the First World War setting.