Which was the main way the Incas modified their environment to grow more food?

Was “labor violence” inevitable and unavoidable? what factors played into causing much of the confrontation between unions and big buisness

What conclusion can be drawn from the information in the chart? a) africa's total number of hiv/aids cases makes up close to 20% of the world's total aids cases. b) poverty and lack of education are the only factors that have pushed the african aids rate to 6.1%. eliminate c) a major challenge facing african governments is finding a way to effectively combat the aids epidemic. d) north american aids rates are lower than the worldwide rate because of extensive government intervention and spending.

What was the direct cause of the u.s. entry into world war ii? a. the bombing of pearl harbor b. the invasion of poland by germany c. the capture of belgium by germany d. the battle of britain