I would feel very sorry for Brazil. For a start there would have been plenty of scope for the allies to stir up internal dissent in South America: after all they were usually pretty good at doing that without help! Second, isolated from Germany and Italy by allied sea control Brazil is on her own, and Argentina could have been brought in by the allies against her with territorial promises postwar. A blockade goes without question. Econoimic problems would soon lead to unrest with the army concentrating on keeping the populace down rather than fighting.

Jumbo

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"Capital! We're nearly out of ammunition! Now we can get at them with the bayonet!" General Paddy Gough, 1st Sikh War