Much of the Vikings' success was due to the technical superiority of their shipbuilding. Their ships proved to be very fast. Thanks to the shape of their ships, they also had the element of surprise. They had large networks which provided knowledge of their enemies. Vikings were also heavily armed. Their weapons were often of the highest quality available at the time. The Vikings were skilled warriors.
<span>The middle class is quickly disappearing from modern economies. The richest people are continually getting richer, while the poor are becoming poorer. The middle class, which was once a much stronger social class is dwindling in numbers.</span>
South America has diverse agricultural products, vast mineral wealth, and plentiful freshwater. It also has rich fisheries and ports on three bodies of water.
