Often called one of the seven modern wonders of the world, the Panama Canal splits the continents of North and South America and launched a new era in global commerce when it opened in 1914.

President Donald Trump has called for the US to retake control of the Panama Canal unless the cost of passage for naval and merchant ships is slashed. Trump’s refusal to rule out the use of force is a throwback to the 19th century era of gunboat diplomacy.

In his inaugural address, President Donald Trump reiterated threats he has made about the Panama Canal, claiming, "we're taking it back." He'd previously declared that the rates Panama charges for access to the Panama Canal violated the “magnanimous gesture” the U.