I'm not anti-American -- American's an country of 
inventors (kidney dialysis machine, optic fibre, 
hula hoop, push through tabs on soda cans, Mr. 
Potato Head, etc. . .) -- but sheesh you really 
don't give the rest of the world enough credit. 

I'm not sure you can say anyone person or country 
invented the computer -- the history's too 
complicated; however the first programmable 
computer was created by Konrad Zuse (German) in 
1936.  

The samething could be said about the automobile -
- although Karl Benz (German) is credited by many 
for many the first practical car with the 
internal combustion engine back in 1885. Granted 
it had three wheel, but it's still an 
automobile.  
http://inventors.about.com/library/inventors/blben
z.htm

And where did you get the idea that Penicilin was 
discovered by an American? Sir Alexander Flemming 
was a British citizen -- died in London. The 
title should have given that away. 

Other things not invented by Americans:  

1. The Jet Engine -- Sir Frank Whittle (British) 
and Doctor Hans Joachim Pabst von Ohain (German)

2. The Helicopter -- Igor Sikorsky (Russian)

3. The lightbulb. Henry Woodward and Matthew 
Evans invented it in 1875 in Toronto. They didn't 
have the money so they sold the patent to Edison. 
Read about it here: 
http://inventors.about.com/library/inventors/bllig
ht.htm#woodward

4. Insulin -- Banting and Best -- Canadians. 

5. Electric Batteries -- Count Alessandro Volta 
(Italian) 
 
So to summarize -- it's just Americans which 
invent things. The rest of the world likes to 
tinker as well. :)