Why did coins replace other mediums of exchange? they had common value and were easy to steal. they were easy to make and difficult to use. they had high value and low weight. they had changing value and were hard to duplicate

They had changing value and were hard to duplicate.

The answer is They had changing quality and were difficult to copy  

Explanation:

A medium of trade is a delegate instrument used to encourage the deal, buy or exchange of products between gatherings. For an instrument to work as a medium of trade, it must speak to a standard of significant worth acknowledged by all gatherings. In current economies, the medium of trade is currency.Medium of Exchange: When cash is utilized to middle the trading of merchandise and enterprises, it is playing out a capacity as a medium of trade. Unit of Account: It is a standard numerical unit of estimation of market estimation of products, administrations, and different exchanges.

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.