A situation whereby a country can consume more than it can produce as a result of specialization and trade is referred to as GAIN FROM TRADE.
The above situation usually occurs when countries produce a surplus of the commodity in which they possess specialization and then trade it for another surplus commodity of another country, thereby making them consume more than they can produce due to occupation and exchange.
Hence, in this case, the answer is GAIN FROM TRADE.
Crusades, many European who went to Jerusalem to fight for the holy land would end up bringing home goods like spices and fabric. This would open up Europe to all new types of foods, materials and ideas about medicine and science.
