Are you referring to the Articles of Confederation? They didn't allow the central government to function. The US Constitution was created as a result. <span />
Non-violent tactics (freedom suits, literary protest, antislavery speeches and petitions) allowed black abolitionists to claim the moral high ground in both word and deed, and in no small way defined African American protest between the Revolution and Civil War.
The reason why members of the year born middle class and Brazil protests the coffee Elite in the 1920 was because governments was controlled by the Elite landowners who grew coffee. The first presidents were elected by rich landowners that grew coffee and this is why the first Brazilian presidents were called coffee president
Yes I think the answer is B concrete.