Air cargo, commonly known as air freight, is collected by firms from shippers and delivered to customers. Aircraft were first used for carrying mail as cargo in 1911. Eventually manufacturers started designing aircraft for other types of freight as well.
Economics and marketing. The consumer is the one who pays something to consume goods and services produced. As such, consumers play a vital role in the economic system of a nation. Without consumer demand, producers would lack one of the key motivations to produce: to sell to consumers. The consumer also forms part of the chain of distribution.
The consumer, so it is said, is the king ... each is a voter who uses his money as votes to get the things done that he wants done [Paul A. Samuelson Economics] Every man is a consumer, and ought to be a producer ... He is by constitution expensive, and needs to be rich [Ralph Waldo Emerson Wealth]