The Civil War was from 1861-1865 which is 4 years.
The Continental System was a decree by the Emperor of France, Napoleon Bonaparte which was made to limit British trade and bankrupt the country.
At his mightiest, Napoleon controlled almost every powerful country in Europe, except for Britain and Russia. He found it difficult to directly attack Britain and instead wanted to bankrupt it.
However, this eventually backfired and left France in a very bad economic conditions and Britain took advantage of this.
Many smaller countries that France had annexed, took up arms against Napoleon and began to fight. With a weakened economic position, Napoleon eventually lost the Empire.
