A bigger economy, with more work and more money, attracts and holds talent. In a longer war, that talent matters. @Pat Young would know all the names. I will mention just a few of the international immigrants. John Ericsson, Daniel McCallum, Phil Sheridan, Francis Lieber, and no name illustrates the principal more than Andrew Carnegie and his progress from the telegraph system to the bridge industry. Then there were the thousands who became railroad workers, longshoremen, sailors and soldiers. The paid labor economy had the work to attract them and hold them. And less expensive trans Atlantic shipping delivered them to the US. And by that era, after 1850, being in the US did not end their access to the European scientific and business literature.
On top of the international immigrants, the paid labor economy, West Point and the US navy attracted internal immigrants too. These went north and found the US army and US navy offered enough opportunity to retain their loyalty.
On top of the international immigrants, the paid labor economy, West Point and the US navy attracted internal immigrants too. These went north and found the US army and US navy offered enough opportunity to retain their loyalty.
