Various topics related to the impact of government actions and policies on the economy are discussed in the given text snippets. The first snippet talks about how governments use the size of public consumption as a tool, and its effect on the trade balance and public budget balance. The second snippet focuses on the effects of changes in exports on GDP and the public budget balance. The third snippet explains the role of tax revenues in covering government expenses and its impact on the budget balance. The fourth snippet discusses the use of terms like endogenous and exogenous variables in economic models. The fifth snippet introduces the concept of government budget balance and its relation to GDP and interest rates. The sixth snippet highlights the importance of considering all government levels in financial discussions. Lastly, the seventh snippet mentions the stability of government spending over economic cycles and its impact on the budget balance. Overall, the text snippets provide insights into the complexities of government policies and their impact on the economy.