Final answer:
Supply-side economics is a policy initiative that focuses on lowering barriers to production to achieve economic growth. Fiscal policies for improving future technologies involve investment in human capital, technology, and physical assets.
Step-by-step explanation:
Supply-side economics is a policy initiative that focuses on the supply side of the economy. It argues that economic growth can be achieved by lowering barriers to production, such as tax rates and business regulations, which allows for greater flexibility and increased supply of goods and services at lower prices.
For high-income countries, the main fiscal policies aimed at improving the technologies the economy will have to draw upon in the future involve investment in human capital, technology, and physical plant and equipment. These countries also prioritize creating a stable and market-oriented economic climate by using monetary policy to keep inflation low and stable and encouraging competition.