Because, predominantly in the agricultural Western region of the United States, the demand for cheap labor was extremely high at the time. The source of this cheap labor were Mexican immigrants.
The answer to your question is b
Answer: Invasions by Barbarian tribes
The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.
<span>(D) is the most correct answer. Pinckney's Treaty, also known as the Treaty of San Lorenzo, gave the US shipping rights on the Mississippi River and transport through New Orleans. The problem, at the time, was that even though the Mississippi River was under US control, the southern part was claimed by the Spanish. This led to a border dispute: Pinckney, then the minister to Great Britain, was the creator of the treaty that resolved this dispute in the late 1790s.</span>
