I think this would be the Great Wall of China!
although it's actually thought to be much, much longer: over 5000 miles long, if yoiu include natural defensive barriers used in it.
Power is a function of voltage times the volume of electrons (current). Power is the ability to do work and is measured in Watts. The higher the voltage the more power you have with the same current.
Answer:
The use of government expenditure and taxation to impact the economy is a big part of policy. A governing body inside a company is more likely to establish policies. Most policies' significance as a policy instrument has grown and gone. Before 1930, a laissez-faire, or small government, approach dominated. When it comes to influencing the economy, policymakers have two basic tools: monetary policy and fiscal policy.
