1990 is the year the two Germanies reunite to form a united nation.
The war giving Cuba independence from Spain was the "Spanish American War", since this was the war in which the US engaged with Spain in part because of their ill treatment towards the Cuban natives.
Faith in socialism, capitalism or communism prevents the rise of fascism because it combines aspects of these things but is different from them all. The idea that democracy is failing can help it rise. Hitler exploited the instability of Germany's democracy and the failure of the coalition governments to push for total power, presenting the idea that Germany needed a 'firm hand' for 4 years to get back on steady footing.