How did the emancipation proclamation become a turning point in the civil war?

The Emancipation Proclamation was a major turning point in the Civil War in that it changed the aim of the war from preserving the Union to being a fight for human freedom, shifted a huge labor force that could benefit the Union war effort from the South to the North and forestalled the potential recognition of the Confederacy by England or France.

honestly you should get that checked out because it really isn't normal

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.