Nationalism heightened in the 19th century and heading into the 20th century. The nationalistic fervor by people in Europe had them each viewing their own nations as better than the others, in competition with the others. This would lead to an increase in tension between the nations.
Imperialism expanded on that nationalistic rivalry by carrying their competition to other parts of the globe. The nations of Europe sought to grab control for themselves over parts of Asia and Africa. When war erupted, that also meant it would become a world war because the European nations would include people from their imperial territories in the war.
Militarism grew ever more potent as the 20th century opened. The competition between nations included a massive arms race in terms of expanding armies and navies. The nations also sided up in competing military alliances and made military battle plans as to how they might fight a war if war came. When a cause for war broke out, all those preparations propelled the nations of Europe into war recklessly.
On the mayflower they had to follow the mayflower compact, if that helps ?
It's technically false that the fall of the Berlin Wall symbolized the end of communism since communism still exists, but it did mark the end of communism in Germany.
With the rise of a Nuclear Soviet State, the United States was auditing it's own internal defense capabilities.
One critical point was the size of the United States and the time it could take to move forces from one point to another in times of war and emergency.
Even within the United States, there was a rise in communist parties which were slowly becoming a threat.
The Interstate highway act not only produced economic benefits to stop the rise of communism in the United States, but also provided nation-wide infrastructure to smoothly and quickly move forces across the country.
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Upwelling occurs when winds blowing across the ocean surface push water away from an area and subsurface water rises up to replace the diverging surface water. Major upwelling areas along the world's coasts are highlighted in red.
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