The table X below contains information on the population of four districts of country Z in the year 2016. Use the information to answer the question which f...

The table X below contains information on the population of four districts of country Z in the year 2016.
Use the information to answer the question which follows.

(a) calculate the; 
i. total population of country Z
ii. total land area of country Z
iii. population density of country Z

(b) State four factors that are responsible for high population densities of countries.

(c) Explain three advantages associated with countries of high population density