One of Napoleon's greatest achievements was the Napoleonic code. He also started the Italian unification and he became the Emperor of France.
Trafalgar, a battle he lost to the English due to his crossing of the T's (naval tactic) and their flag communication.
the continental system
That that was called "the perfect battle", the Battle of Austerlitz, which had been carried out exactly as planned by Napoleon. In my opinion also the first part of the same campaign, that is the "manoeuvre on Ulm", which led to the encirclement and surrendering of an Austrian army of 50,000 men under Gen. Mack in Ulm is worth of being recorded as a component of the aforesaid greatest military accomplishment.
The two greatest achievements in Rome are in the areas of architecture and law.
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the Napoleonic Code
Many people would consider that the creation of the Code Napoleon, which is a body of law that remains part (but is not all) of the French legal system to this day, is among his greatest achievements.
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Trafalgar, a battle he lost to the English due to his crossing of the T's (naval tactic) and their flag communication.
the continental system
Their greatest achievements were made in Mathematics and Medicine/engineering.
There are a number of achievements that Serena Williams may consider her greatest. Some consider her fame her greatest achievement.
what is Bill Gates greatest achievements
one of his greatest achievements were he was the first European astronomer to change the medieval belief system =)
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That that was called "the perfect battle", the Battle of Austerlitz, which had been carried out exactly as planned by Napoleon. In my opinion also the first part of the same campaign, that is the "manoeuvre on Ulm", which led to the encirclement and surrendering of an Austrian army of 50,000 men under Gen. Mack in Ulm is worth of being recorded as a component of the aforesaid greatest military accomplishment.
One of Liberia's greatest achievements is having the first Women president (Ellen Johnson) on the continent of Africa.