Countries' real GDP per capita growth rates differ largely due to disparities in the rates at which they accumulate , as well as the rate of change. In many countries, growth has been achieved through high rates of and spending. , which is (are) a key contributor to economic growth, generally requires significant investment in .

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Explanation:

Your question looks confusing but let me try and break it down.

a. Countries real GDP per capita growth rates differ largely due to disparities in the rate they accumulate:

• Human capital

• Physical capital

• Technological change

b. In many countries growth has been achieved through high rates of:

(Saving and investments) and spending.

c. (Technological progress) is a key contributor of economic growth, generally requires significant investment in:

Research and development.

The reasons for the differences in the gross domestic product of countries has to do with the differences in the human capital, physical capital and the technological changes. Countries that are technologically advanced and uses capital intensive method of production have higher GDP when compared to countries that are technologically deficient. Also, educational level of the citizens also contributes to GDP.

For growth to be achieved in a country, there'll be a high amount of savings, investments and spending. Also, technological progress is vital for the economic growth of a country and this can be achieved when such country invests in research and development.

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