<span>a. Southern congressmen opposed the banning of slavery from the new territories
</span><span>Northern states and southern states were at odds over the potential spread of slavery in new states and what that would do to the balance of power in Congress. <span>
In 1846, Congressman David Wilmot of Pennsylvania introduced the proviso as an amendment to an appropriations bill in connection with the peace treaty being negotiated with Mexico. His amendment stipulated that any territory gained from Mexico would be free, not allowing slavery. Wilmot's amendment passed in the House of Representatives, but was unable to get approval in the Senate. The Compromise of 1850, a package of five bills passed by Congress in September of that year, sought to accommodate some of the issues both South and North were debating over during those years. But we know that war over the slavery issue was yet to come.</span></span>
Answer:
Imigrants contribute to the US in many ways
Explanation:
Example : They work at high rates and make up more than a third of the workforce in some industries. Their geographic mobility helps local economies respond to worker shortages, smoothing out bumps that could otherwise weaken the economy. Immigrant workers help support the aging native-born population, increasing the number of workers as compared to retirees and bolstering the Social Security and Medicare trust funds. And children born to immigrant families are upwardly mobile, promising future benefits not only to their families, but to the U.S. economy overall.
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