Survival of the fittest and Darwin's theory of natural selection are clearly the biggest themes in "The Call of the Wild".
We're set in London following Buck, a dog who from the start is in conflict with his surroundings, with humans, as well as with other dogs. His goal in the story is to overcome these challenges and survive. In a way, Buck must learn to be wilder than his environment in order to stay alive. He senses the harshness and brutality of the world around him looking directly at the consequences anyone that fails to adapt could suffer, in the figure of Curly, a good natured and harmless dog who is being crushed by his inability to overcome these conditions.
This tale is a pefect parallel with Darwin's theories, which propose that each species evolves in a way that enables them to overcome the obstacles presented by their environment in order to survive.
Hope this helps!
In April 1775 British soldiers, called lobsterbacks because of their red coats, and minutemen the colonists' militia exchanged gunfire at Lexington and Concord in Massachusetts. Described as "the shot heard round the world," it signaled the start of the American Revolution and led to the creation of a new nation. :)
The Supreme Court had been striking down New Deal Programs as unconstitutional. Before Roosevelt introduced this plan, the Supreme Court have rejected many elements of his New Deal plan because the authority held by the Executive was too much and considered unconstitutional. He thought that by adding more justices to the Supreme Court, it would protect his legislation. Still it was rejected by both liberals and conservatives.
Answer:
The Maxim Gun had taken an extreme toll of casualties due to the way of warfare during World War One. As waves upon waves of soldiers would attack the other sides trench, the Maxim Gun had kept the aggressors in bay. Not like a conventional rifle with one shot then cocking your gun, the Maximum Gun had sprayed bullets everywhere it aimed taking down a vast amount of soldiers. This gun was revolutionary as it was the first fully automatic weapon.