correct answer is AFRICA MISSED OUT ON GENERERATIONS OF ECONOMIC...
God, if I could choose, I would say none. All of these lead to inequality (because circumstances vary between many individuals) but I believe prestige should hold the most weight in determining social class. Prestige (which is respect, recognition, or regard) is based on many criteria, including wealth, family background, fame, leadership, power, occupation, and accomplishments. Leadership, power, and accomplishments can both be achieved by any individual with hard work. This is still an unfair balance (gender inequality, racial/ethnical inequality/racism) because of individual factors, it still leaves hope for some people to rise the social ladder.
The Moroccan invasion was the direct factor that caused the Songhai kingdom to fall. Many other factors such as incompetent leaders, and loads of rebellions caused this too.
B.low self-esteem,she's comparing herself to someone else.