Constant returns to scale refers to the same amount of output increase with the increase within the factors of production. Labor-abundant country means that the ratio of the total amount of labor to the total amount of capital available in the country is greater than the other country. On the other hand, capital-abundant country means that the ratio of the total amount of capital to the total amount of labor available in the country is greater than the other country. Labor-intensive commodity is produced with a higher (L/K) ratio than the other commodity in both countries. Capital-intensive commodity is produced with a higher (K/L) ratio than the other commodity in both countries.