Two of the issues that made it difficult for explorers during Columbus's time to explore unknown territory by sea were; inaccuracies of navigational tools made exploration by sea inconsistent and unpredictable and explorers had limited knowledge of the world’s geography.
Further Explanation:
During Columbus's time of exploring the sea was the best way to travel. The governments wanted to explore so they could use the sea for trade routes and commercial operations.
In addition to the answers above, other things that made exploration difficult during this time were;
- early technology used was imprecise such as "dead reckoning"
- the seas were challenging and inconsistent since they were uncharted
- navigators could become lost
- the financial risks were too high if the navigators and ships were lost
When Christopher Columbus did find America it was not intentional, he was actually going to Spain but he did not have the tool or the knowledge to get there and ended up going the wrong direction.
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Norway, Iceland, Sweden, Denmark, Australia, Netherlands
Napoleon enlisted Spain’s help in forming a strong navy, but he was defeated anyway.
At the time of the Battle of Trafalgar, in 1805, France and Spain were operating in an alliance. Having Spain's navy helped strengthen France's chances at sea, but it was not enough. Napoleon was an artillery man, and the French navy never achieved the strength that Napoleon's <em>Grand Armee </em>achieved on land. The British navy was the strongest naval force on the seas. Plus, the British had Admiral Horatio Nelson in command. His surprising tactics in the Battle of Trafalgar yielded victory for the British Royal Navy against the combined fleets of France and Spain. Nelson himself received a wound in the battle that cost him his life, but the battle stands in history as his greatest victory.