I would say A or C since it depends on the myth.
Nominating conventions related to politics because at nominating conventions political parties seek to decide who they will nominate to run in different elections. Nomination conventions are often times the place where the parties formally announce the nomination of a candidate who has been chosen by a caucus or electoral process either in a state or nationally.
Answer:
you have to list the following for us to answer
They did this because the soil was more fertile while it got harder to farmer further West
