St Lawrence river, why might it be important to trade?

Distance that the transcontinental railroad covered from omaha to san francisco.

In wegener’s evidence for continental drift, continents were proposed to fit together, such as the east coast of south america with the west coast of europe. east coast of africa. west coast of greenland. lower west coast of africa.

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )