Why was the United States motto changed from “"E Pluribus Unum" to "In God We Trust" in 1956?

On July 30, 1956, the 84th Congress passed a joint resolution "declaring 'IN GOD WE TRUST' the national motto of the United States." The resolution passed both the House and the Senate unanimously and without debate. It replaced E pluribus unum, which had existed before as a de facto official motto.

Explanation:

Union supporters wanted to emphasize their attachment to God and to boost morale.

Explanation:

While the earliest mentions of the phrase can be found in the mid-18th century, the origins of this phrase as a political motto lie in the American Civil War.

Slaves

Explanation:

Slaves were the type of laborers that were forced to work against their will. Slavery was a common feature of most civilizations in antiquity. However, in modern times, it is usually associated with the Atlantic slave trade. This trade brought captured African people to work in America. People who were brought to the continent in this way were forced to work against their will. They also suffered terrible work conditions and mistreatment, as well as constant abuse. Slavery ended in the United States with the Civil War and the Emancipation Proclamation.