South wanted slavery, rebellions because of Lincoln becoming president, John Brown's and other abolitionists actions, the consequences caused by Compromise of 1850, the consequences of the Fugitive Slave Act, and the controversy and Bleeding Kansas.
Segregation by law is referred to as separation between colored and whites. they did this because they thought that blacks were different and should be treated different . but soon Martin luther king Jr stop segregation.
I would say B manifest destiny
Answer:
150 years ago, the construction of the First Transcontinental Railway was completed in the United States. The implementation of the project has become one of the most ambitious scientific and technological achievements of the United States in the 19th century and has led to a revival of the national economy. However, the construction was mainly carried out in territories captured from the Indians. According to historians, the highway has greatly accelerated the process of extermination and enslavement of the indigenous people of North America, and also contributed to the destruction of natural diversity on the continent.
Explanation: