As with any system, there will be an expansion of a population that is only halted by the mechanisms of the system being overly stressed and unable to maintain a population over a certain level or threshold. It is natural to fight for resources in a given system. The European population settled and increased, more resources were needed, land, water, food and supplies. The Europeans fought to maintain and increase the people with whom they associated. And unfortunately a prevalent thought at the time, was the Indians were a "savage other", whose lives were not as valuable and so the Europeans eventually destroyed them.
The Hydrogen bomb uses fusion, and fusion is more powerful than Fission, which was used in Atomic Bombs. <em>The hydrogen bomb was more destructive than the atomic bomb.</em> Both are nuclear weapons but Hydrogen has more power and that is how it differed from the atomic bomb during the Cold War arms race.
I believe the greatest challenge our generation is facing would be socializing. It seems crazy to think that would be our challenge, considering we do it all the time from our phones and devices. However, I believe the main problem is socializing face-to-face; We find difficulty looking up from our phones and saying "Hi!" to people on the street or ordering a cup of coffee. For the most part, I believe we have become so used to a new way of speaking that we havent fully mastered the "old way" of speaking. In a sense, we simply arent used to it. This leaves much of our generation "socially immature" when it comes to speaking in person, especially to older generations. In other words, I believe the greatest challenge facing or generation would be our range of social skills.
<em>Hopefully this helps!</em>
They were developed for immigrants to develop their own communities, despite having not access to fixed housing