What are four factors that influence the business cycle?

Four factors that influence the business cycle include consumer spending, which drives demand for goods and services; interest rates, which affect borrowing costs and investment decisions; government policies, including fiscal and monetary measures that can stimulate or dampen economic activity; and external shocks, such as natural disasters or geopolitical events, which can disrupt economic stability. These factors interact in complex ways, leading to periods of expansion and contraction in the economy.