This is not a question that makes sense but im guessing you want to know how they were transported and i would say via rivers
Answer:
B.
Explanation:
I have the same question on a quiz
causes were The widespread dissatisfaction with the political leadership;
the demand for more participation and democracy;
the demands of the working classes; t
he upsurge of nationalism were some causes of the revolutions.
the US wanted to benefit
from the plethora of trading opportunities that dealing with China
offered.
That would be the spread of Islam. The height of its conquests being after Muhammad’s death.