Q- Why are the people of the country called as resource?
Answer- The people of the country called as resource because human is the only one who can utilize all the other resources such as land, labour and physical capital. Without human capital all the resources are not resource they are waste.
Nowadays, countries such as Japan, South Korea e.t.c. have low resources but have interest in Human capital and are one of the largest economies.
In other words the country which invests his economy in human capital is the most powerful of the future. That is why people of the country is called as resource.