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Ying Zheng consolidated the Chinese state of Qin about how many years ago:
Federal Reserve
The central banking system of the United States, responsible for monetary policy, regulation of banks, and providing financial services to depository institutions.
U.S. Government Securities
Financial instruments issued by the United States Department of the Treasury to finance federal government spending, considered very low risk.
Full-Employment Output
is the level of output that an economy can produce when operating at a full employment level, where all available labor and resources are being used efficiently.
Government Securities
Financial instruments issued by the government to finance its expenditures, offering investors a relatively safe investment option compared to other securities.
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