Final answer:
The main components of a country's long-term economic growth trend are capital accumulation and technological progress.
Step-by-step explanation:
The main components of a country's long-term economic growth trend are capital accumulation and technological progress. Capital accumulation refers to the increase in the amount of capital per worker, which includes both human capital (such as education and skills) and physical capital (such as machinery and infrastructure). Technological progress refers to the adoption of new methods of production, including scientific inventions, small innovations, and better forms of management. These components, along with a market-oriented environment and supportive public policies, contribute to a healthy climate for growth in GDP per capita.