As we know....the Roman Empire was very, very successful.....but if we look closely; I believe it's quite easy to distinguish by which means the Roman Empire used to grow. Rome just loved to war aka conquest other countries...it would use its resources and force them to pay tributaries (payment to the person whom conquered them). They had an incredibly good army..their military techniques were incredibly smart..and they also had war machines; which greatly contributed to their power on the battlefield. As far as I know, Rome rarely made alliances and agreements...Christianity was after the fall of Rome.
This being said to expand and grow, it's quite obvious that the Roman Empire went on conquests and war to expand and thrive. Alas, all Empires fall...as did the might Roman Empire.
Thus, your answer.
It might be D, since that ties with agricultural
<span>Sam Adams started the "Committee of Correspondence" so that the colonists in various colonies could communicate with each other, since it was clear that the colonies would need to work together. </span>
So the question ask what is the result in the westward expansion in the mid 1800's and the best answer among your choices is letter A. increased dramatically. I hope you are satisfied with my answer and feel free to ask for more if you have clarifications