the difference in value over a period of time of a country's imports and exports of merchandise; "a nation's balance of trade is favorable when its exports exceed its imports"
former measure of the United States economy; the total market value of goods and services produced by all citizens and capital during a given period (usually 1 yr)
the quality of not putting yourself first but being willing to give your time or money or effort etc. for others; "rural people show more devotion and unselfishness than do their urban cousins"