False. Rudders are used to steer boats, ships, submarines, and aircraft.
<u><em>Corporate structure and frenzied investment/speculation, insufficent grass to support long drives, ranges were shrunk by railroads, severe weather in 1885-1887.</em></u>
<u><em>The cattle frontier ended because barbed wire was invented, which replaced the need for cowboys. Weather also influenced the downfall, as blizzards trapped herds and droughts caused fire. These disasters destroyed land, and many animals were lost. </em></u>
<span>The federalist party believed the government should focus on developing a strong economy which was outlined in most of their major policies, including creating a national bank and introducing tariffs.</span>
During the Middle Ages farming was the basis of society. Every one of the feudal system - the lord, servants, and retainers - was supported by the income that came from farming. So the exploration of land was extremely important which caused a huge environmental impact.
The problem was that in that time there was no agricultural improvement, they did not know how to enrich the soil or how to do the proper rotation of crops, they used the system that cultivated 2/3 of the land and let the other third to rest. This caused a series of impacts such as climate changes, deforestation, and soil erosion.