The answer Americans would get involved in all wars
I would say 30,000 cause all the next developments were from the 1860's forward and that is when huge growth happened, after 1860.
<span>On his first voyage in 1534, Cartier
sailed westward from France across the Arctic Ocean. It was during this
journey that he named the Gulf of Saint Lawrence. He returned to France
dejected, though, because he had been unable to sell any watches.</span>
