Americans became more open and welcoming to immigrants -Apex
In the west, the definining feature of the modern era is the development of all forces of modernity, i.e., science, reason, democracy, liberty and equality. Medieval is in fact a term that is used to describe a societal period that lacked all these features.
Northern states saw slavery as cruel and agianst humanity. Southern states saw slavery as the economic backbone of their economy and felt it was necessary.
Answer:
it helped break the statement of trench warfare
Explanation: