One pretty straightforward answer could be investment to physical and human capital. But if you are if you are working with a mathematical model the answer to your question depends on the specific model. For example, in an equilibrium model from economic theory, you could find the determinants of labour productivity by taking the partial derivative of the production function with respect to the amount og labour.
The answer to this question is <span>when two variables are correlated, we cannot be sure what is causing the correlation.
For example, let's there is a study that found an increase in consumption in tofu lead to an increase in breast cancer.
Even if it's true that those two really correlated (let's just assume it), we wouldn't be able to know why it is correlated without further researches.</span>
People gather during sports fest or any activities that relate to sports. These are the opportunities that different people from different places are able to showcase their physical abilities and strengths. How this effectively build the nation and promote diversity is that, it encourages unity. Unity in a way any people in different places come together to witness such event. This is a great chance for promotions and awareness events.