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Correct answer is a: trouble in the balkans United European leaders.
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Ancien regime or the old order was a social and political system of France prior to the revolution of France(1789). Under the old regime, the king of France was an absolute despot and had centralized power in the imperial administration. The political system of France was comprised of the 3 estates which served Clergy on the first stage, Nobility on the second and the Others on the third estate. Thus the old regime came to an end with the French revolution of 1789, when the revolutionaries abolished the hereditary Monarchy and the system of French nobility.
Naturalization or they can go through the green card process