Thoughts on the American Civil War of 1861-1865.

I have always wondered why no European or Asian nation intervened to make capital gains during the American Civil War of 1861-1865.

My best guesses are:

• Napoleon III's France had just gotten involved in the second Italian war of Independence (1858) against the Austrian-Hungarian Empire.
  It was also involved in the Cinco de Mayo Mexican caper of 1862 (poor Maximilian) and had to keep an eye on Bismarks's bellicose Prussia.
  

• Prussia got late to the great powers table and was busy colonizing what was left of Africa and spoiling for the fight with France that came in the Franco-Prussian War of 1870-1871.
  

• England was watching both France and Prussia besides having just quelled the Sepoy revolt of 1857-1858 in India and getting ready to fight for South Africa: the Zulu war of 1879 and the Boer war of 1899-1902.
  Besides being afraid of losing Canada that in 1867 became anyway the semi-independent Dominion of Canada.
  

• The Austrian-Hungarian Empire having lost its Italian provinces, was busy digesting Bosnia-Herzegovina and appeasing the rebellious Magyars.
  

• Czarist Russia was busy with expanding in Asia. Siberia and the "stans" beyond but not Afghanistan checkmated by the Brits.
  

• Spain with no more spoils from the Americas to keep it afloat was in a deep decline and was finished off as a power by the Spanish-American war of 1898 when the USA became a colonial power by grabbing the Philippines, Guam, Puerto Rico and Cuba.
  

• Italy well just unified and not ready for prime time. The Roman Empire a memory of a very long time ago ....
  

• The Ottoman Empire was busy falling apart.
  

• China had just lost the Opium War of 1839-1842 to England was in deep denial and soul searching for what happened to the Middle Kingdom.
  

• Lastly Japan, too busy catching up with the West after 4 centuries of isolation. And Japan may have been a creation of the British as a way to counter balance the Russian advances in Northern Asia. The Russo-Japanese War of 1904–1905 was eventually fought over rival imperialist ambitions in Manchuria and Korea.
  

So the luck of the Yankees endured.