Where was first torpedo made?

Croatia, Rijeka.

Actually be amazed that the US used something of a torpedo during the civil war. The Union soilders had something similar to a submarine and the torpedo was guided along by a wire.

The word torpedo comes from the torpedo genus of electric rays in the order Torpediniformes, which in turn comes from the Latin "torpere", to be stiffened or paralyzed. There is no physical resemblance between the ray and the mechanical torpedo.

In naval usage, the term "torpedo" was first used by Robert Fulton who used the word for the towed gunpowder charge used by his submarine Nautilus in 1800–1805 to demonstrate that it could sink warships.

The term became generally used to refer to tethered naval mines, developed in the American Civil War in the 1860s by Matthew F. Maury, a Confederate Admiral (these are what David Farragut was referring to when he ordered his men to "damn the torpedoes, full speed ahead"). This use of the word to refer to what are now called "mines" lasted until World War I. As self-propelled torpedoes were developed the tethered variety was referred to as "stationary torpedo" and later "mine".

the US is a good guess ....but actually alexander the great first empoyed the "ie" torpedo...was mounted to the front of his ship and set a blaze and would ram the other ship setting it on fire

mmm don't know but we have got a pretty fast one here in Australia