This ruler took the throne based on the Treaty of the XVIII (“eighteen”) Articles, which was unfavorably revised into the Treaty of the XXIV (“twenty-four”) Articles. This ruler regained an occupied city in a siege that used the 24-inch “Monster Mortar” and was led by Baron Haxo. This ruler was called the “Nestor of Europe” for his diplomacy and familial marriage brokerages, (-5[1])such as that of his nephew Ferdinand II to Maria II of Portugal. This ruler accepted (-5[1])and then declined a throne created by the Protocol of London, letting Otto of Bavaria be chosen as king of Greece. (-5[1])The accession of this ruler, whose first wife was Charlotte (10[1]-5[1])of Wales, led to an (-5[1])invasion of his country in the Ten Days’ Campaign. (10[1])This ruler took the throne after a nationalistic (-5[1])revolution that was allegedly caused (10[1])by a performance of the opera (10[1])The (10[1])Mute Girl (10[1])of Portici (“POR-tee-chee”) in 1830. (10[3])For 10 points, what member of the House of Saxe-Coburg (“SOX-uh KOH-burg”) served as the first king of the Belgians? (10[1])■END■ (10[8]0[1])