Complex sentence: On 19 May 1822 his father was elected Emperor of Mexico by the Mexican Congress, young Agustín reportedly became so dizzy he could hardly stand when he heard the news of his father's election as emperor of the new nation.
Split into simpler sentences: On 19 May 1822, his father was elected Emperor of Mexico by the Mexican Congress. Young Agustín reportedly became so dizzy that he could hardly stand when he heard the news of his father's election as emperor of the new nation.