Answer:
A. to stop Mexican attacks against US territory
Explanation:
Polk had declared that the Mexican advance was an invasion onto US territory, and on May 11, 1846, he asked Congress to declare war on Mexico. It was made official two days later, on May 13.
Answer: Five countries each have the power to veto an action.
Explanation:
Central to the Nullification crisis during Jackson’s presidency, was the notion that "<span>c. States could nullify, and therefore not obey, any duly passed national law that they deemed objectionable or unconstitutional"</span>
A synergy between iron and steel, railroads and coal developed at the beginning of the Second Industrial Revolution. Railroads allowed cheap transportation of materials and products, which in turn led to cheap rails to build more roads. Railroads also benefited from cheap coal for their steam locomotives.
