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During the land collision of the major continents 375 million years ago, the current day Appalachian Mountains were formed. The results of the land collisions were that mountains formed when the North American, African, and European tectonic plates collided. The reason the mountains were formed was because wherever there is a force, the pressure must be released. In the case, the pressure went up to created mountains.(2). When these land masses separated, the North American plate continued to push into the European plate causing more mountains to form. The mountains formed as a result are the Norwegian mountains (1). The continent continued to move until it formed Pangea 200 million years ago. The continents only truly broke apart when a small crack gave way to water. The water then started to break up the super continent to give way to the current day Europe and North America (3). Three hundred and fifty years ago much change was brought upon this world with the Devonian extinction (5). The cause of the Devonian mass extinction has been narrowed down to two possibilities The first possibility was that the glaciation ta was going on cooled down the seas too much and warm temperature species died because they could not adapt..