Many historians agree that westward expansion was indeed the primary source of contention between the North and South in the sense that it made the question os slavery unavoidable. Each new state had to be determined slave or free--leading to disagreements that led to the Civil War.
Inter cellular communication involves transmission of information among cells of the body which are located far apart while intra cellular communication involve transmission of information within a cell. the correct answer to this question is 'a message is distributed across plasma membrane', this is because that is an example of intra cellular communication.
Answer:
Expository style is used to explain things while giving information like a teacher would do in his class while teaching his students.
A Persuasive style of writing is a style that aims to provide a point of view to the reader in a bid to sway his opinion.
Hope this helps!
