What did algriculture do that changed humanity, and how is it better than hunting

The development of agriculture led to increased trade as agricultural areas traded surplus crops for other goods. Government officials regulated trade and exchange rates—over time, government's role would expand with trade. Agriculture also led to an increase in cities; this also necessitated more governance.

Farming enables a more stable and reliable way of obtaining food. You can farm anywhere as long as you have fertile soil. You can feed more, with farming, whereas hunting and gathering can only feed a small few. Because you can only hunt so much.

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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.

darwinism is survival of the fittest there for social darwinism is the survival of the wealthiest