Final answer:
Woodrow Wilson's call for democratic elections during the Mexican Revolution led to U.S. intervention but did not bring peace or enable Pancho Villa to become president. It resulted in increased tensions, including attacks by Villa and threats to U.S. business interests by Carranza.
Step-by-step explanation:
The impact of Woodrow Wilson's call for democratic elections during the Mexican Revolution was complex. It certainly did not bring about a quick and peaceful conclusion, as the Mexican Revolution continued with various factions vying for control. The correct impact is that Wilson's demand for democratic elections and his initial support for Venustiano Carranza, contributed to tensions with other revolutionary leaders, particularly Pancho Villa. Wilson's stance led to more animosity when he ultimately backed away from supporting Villa, who felt betrayed and consequently attacked Columbus, New Mexico, in retaliation. This incursion by Villa into U.S. territory forced Wilson to send U.S. troops into Mexico—an intervention that failed to capture Villa and strained relations with Carranza's government. Over time, this contributed to Villa's resolve to oppose Carranza's leadership. Meanwhile, Carranza threatened U.S. oil companies and other foreign interests in an effort to assert national sovereignty and control over Mexico's resources, which is the most direct impact related to the question options.