Weaknesses included racial and gendered segregation, and economic faults
It could mean many things but the most common explanation is to own up to your mistakes. to not walk around looking for someone else to blame. It depends on how it's used in context though.
Urban slavery was well developed in Spanish America and Brazil. Slavery took a long time to get removed from these countries. Slavery in Brazil was prevalent in the country long before the Portuguese settlement started around the year 1532. Later on the colonists were also heavily dependent on the slaves.
Communism, Fascism and the New Deal were all strong during the Great Depression. However, Monarchies would be the choice that was not strong during the Great Depression.