Investments in long-term government bonds produced a negative average return during the period 1977-1981. How should we

Question:

Investments in long-term government bonds produced a negative average return during the period 1977-1981. How should we interpret this? Did bond investors in 1977 expect to earn a negative premium? What do these 5 years' bond returns tell us about the normal future premium?
Maturity
Maturity is the date on which the life of a transaction or financial instrument ends, after which it must either be renewed, or it will cease to exist. The term is commonly used for deposits, foreign exchange spot, and forward transactions, interest...