MEXICO CITY — The United States’ support this week of an opposition leader as Venezuela’s interim president seemed to follow a pattern familiar to Latin America, reawakening suspicions of Washington’s intentions in the region and calling to mind American interventions in recent decades.

“Don’t trust the gringos,” President Nicolás Maduro of Venezuela said this week, listing United States-backed military coups in the region. “They don’t have friends or loyalties. They only have interests, guts and the ambition to take Venezuela’s oil, gas and gold.”

But where in the past the United States might have felt isolated in Latin America, this time it has company. Many of the nations in the region have denounced Mr. Maduro and instead recognized the opposition leader, Juan Guaidó, as the country’s legitimate president.

Brazil, Colombia, Ecuador, Peru, Guatemala, Chile, Canada and other nations have joined the Trump administration, concerned by the economic and humanitarian crisis in Venezuela and its destabilizing effect on the region.