So we are approaching some huge events -- bad ones. World War I and the Bolshevik Revolution. Any differences?
Do you really think a divergence which is, in the wide realm of things, minor on the world scale especially in contrast to the events of 1914-1918 going to be able to impact anything internationally[qm]. No.
It depends on how quickly Brazil joins the Allied powers. The main effect would be naval, with the Central Powers facing a deeper and tighter blockade earlier. Or can the war either be prevented or stopped early?