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In page Charles Emmanuel II:

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But he greatly improved commerce and wealth in the Duchy, developing the port of Nice and building a road through the Alps towards France. He also reformed the army, which until then was mostly composed of mercenaries: he formed instead five Piedmontese regiments and recreated cavalry, as well as introducing uniforms. He also restored fortifications. He constructed many beautiful buildings in Turin, for instance, the Palazzo Reale.[citation needed]