Statistics for Past country unions

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Hint	Answer	% Correct
Used to be the biggest country in the world. dissolved 1991	Soviet Union	100%
A country in Africa which when it dissolved, created the newest country in 2011	Sudan	86%
A country that got its independence from the Austro-Hungarian Empire. Dissolved 1993	Czechoslovakia	82%
A country which was split in a violent civil war which lasted for 10 years. dissolved 2006	Yugoslavia	55%
A Country where the king married the queen of Portugal due to her having no male heir. Ended in 1640	Iberian Union	41%
Was the predecessor of the modern Polish state that controlled most of Eastern Europe. Dissolved 1795.	Poland-Lithuania	27%
A south African country which dissolved after Namibia declared independence in 1990	Union of South Africa	14%