Solution:The Peacock-Wiseman hypothesis, also known as the displacement effect, explains increase in government spending over time.
The hypothesis has three effects:-
1. Displacement Effect- When a social disturbance, like war, occurs, the government raises taxes and increases public expenditure to meet the disturbance this replaces low taxes and expenditures with higher ones.
2. Inspection Effect- When revenune lags required spending, the government and people must assess the revenue positions and find solutions.
3. Concentration Effect-When an economy is experiencing growth, central governemnt economic activities tend to grow faster than state and local government economic activity.