A historian using the historical thinking skill of examining historiography might try to determine how much has already been written about a certain subject before embarking on his or her own project, since this historiography of a topic can help you understand the evolution of "thinking about" the issue.
It changes the direction of the sun and wherever the sun is facing will have higher temperature and will be in daylight.
I believe the answer is D: T<span>he decrease of trade as the result of world conflict.</span>
