Answer: B
Explanation: "A plague o' both your houses," is a curse. Mercutio is renouncing any and all allegiance he previously had to the Montague house and cursing both houses indiscriminately. He does this because he believes that it is the feud that has lead to his death and he wants to symbolically get revenge.
The government plays the role of promoting economic growth and stability of a country. It does this by providing legal and policy frameworks, a stable environment for business and investing in manpower and infrastructure.
In short, the government enforces economic laws and regulations.
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Answer:
The quest for Western influence contributed to the conquest of Texas and the Mexican-American War in the mid-19th century. This extension led to disputes over the fate of Western slavery, raising tensions between the North and South, leading eventually to the fall of American independence and a bloody civil war.