The population shift from china occurred during the years of the song dynasty. eastern to western western to eastern northern to southern southern to norther

increased food supply

improved public health

increased birth rates

hope this : d

b. after i get up in the morning,

explanation:

after is a subordinating conjunction that introduces a time clause. time clauses are dependent clauses used to indicate when something happened.

the clause "after i get up in the morning" tells when the action in the main clause (drinking a cup of coffee) happens:

"after i get up in the morning, i drink a cup of coffee." it is the most logical choice of all.