The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Panama land Bridge connecting Central America to South America has existed for about 12 to 15 million years., according to scientific and geological research.
Scientists confirm that before the appearance of the Panama land bridge or the Isthmus of Panama, a water channel connected the Atlantic Ocean to the Pacific Ocean.
That is why at the end of the 1800s and beginning of the 1900s, France started the construction of teh Panama Canal, because it was the easiest way to connect the two oceans and develop a channel for the cargo ships to cross. The works of the channel were dropped by the French and it was the United States' engineers that finished the Panama Canal.
