82.
The Communist Manifesto, written jointly by Marx and Engels's was published in

83.
Every factor of production gets rewarded equal to its

84.
Utility is more closely related to the term

85.
The short run

86.
Who stated explicitly for the first time, the Law of Comparative Costs?

87.
According to Keynes, interest is a payment for

88.
Demand curve slopes downward because of the law of

89.
The long run is a

90.
The Purchasing Power Parity Theory' came into prominence in 1916 through the writings of