Which of these was the largest and most constant issue facing the united states during the era of "manifest destiny? " a) whether labor unions would be allowed to form b) whether states would allow women the right to vote c) whether indians would be relocated to north carolina d) whether slavery would spread across the united states

The correct answer is D. The largest and most constant issue facing the United States during the era of "Manifest Destiny" was whether slavery would spread across the United States.

Explanation:

In the mid-nineteenth century, expansionism, especially southward toward Cuba, also faced opposition from Americans trying to abolish slavery. As more territories were added to the United States in subsequent decades, "widening the area of freedom" in the minds of southerners also meant broadening the institution of slavery. This is why slavery became one of the central issues in the continental expansion of the United States before the Civil War.

answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation:

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.