That is false, all muslims that can financially make the pilgrimage to the holy site of Mecca are required. The holy pilgrimage to Mecca, also called Hajj, is one of the 5 pillars of Islam.
Answer:
HDI-human development index
the colum below shows schooling years(education part of HDI)-shows how "intelligent" a country is which indirectly relates to how much income is earned.
A very large range of countries are shown and as the poorer the country gets so does the level and amount of education
Explanation:
HDI is is a statistic composite index of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development.