Because the US needed to honor its vow to defend Russia
Southerners approved the Dred Scott decision believing Congress had no right to prohibit slavery in the territories. Abraham Lincoln reacted with disgust to the ruling and was spurred into political action, publicly speaking out against it.
The correct answer is letter A.
Interest groups are primarily focused on actively promoting a particular cause or belief. They are usually composed of voluntary associations that publicly promote and create advantage for their specific cause. Charitable groups, trade associations, and civil rights groups are some examples of interest groups in society.
Many factors contributed to Britain's dominance, including agricultural changes, a population boom, economic innovations, new ideas and a scientific viewpoint, transportation foundations, natural resources, a supportive government, and a trade network with numerous colonies. So the answer is D
