Answer:
Improvement in labor productivity, increase in resources, and technological advancements
Step-by-step explanation:
In Roger Arnold's text entitled, "Macroeconomics" (2019), a nation can increase its production possibilities and achieve economic growth through an improvement in labor productivity, an increase in its resources, and technological advancements.
A nation is said to be productive efficient if it can produce the maximum amount of goods with its existing resources and technology. Hence, it is essential for a nation to take advantage of the productive capabilities of its workforce with specialized trade, which could also increase the production of consumer goods and trading of specialized services.
An increase in resources enables a nation to produce greater quantities of military and civilian outputs. Technological advancements also allow a nation to increase its productive capabilities, thereby enabling them to produce goods with a fixed amount of resources, or produce the same amount of output with lesser resources used.