The document discusses various means of transportation including waterways like lakes, canals, and important canals like the Suez Canal and Panama Canal. It provides details about the Panama Canal, including how it was built and signed over to the US in 1903, and how it generates hydroelectric power. The Panama Canal has brought commercial advantages to the US by connecting the Atlantic and Pacific oceans and has earned revenue through toll taxes. Ocean transport is also discussed as the cheapest means of international trade, with specifics provided about the important North Atlantic ocean route that connects North America and Northwestern Europe.