WORLD HISTORY

Detailed explanation-1: -Caste systems are closed stratification systems in which people can do little or nothing to change their social standing. A caste system is one in which people are born into their social standing and will remain in it their whole lives.

Detailed explanation-2: -A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. Monsoons cause wet and dry seasons throughout much of the tropics. Monsoons are most often associated with the Indian Ocean. Monsoons always blow from cold to warm regions.