This is known as the Columbian Exchange; option A. This includes for example Coffee and Chocolate (the plants); which are today to a great degree cultivated in a continent different than the one they originally evolved on. <span />
The allied powers used land as their mail gorund to fight on while the germans used the sea as a sneek attack bc the allied powers didn't see it coming that is how the ussr was sank bc of a surpisre attack from the Germans .
