I would say A or C but I would go with A and if not go with C but I'm
NOT a 100% sure.
<span>According to Robert Kraske, two ways the profits of the salt trade affected the city of Timbuktu was that it increased GDP and increased trade revenue. </span>
The answer is B. In a federalist system of government, like in the US, the powers are divided between the national and state governments, meaning this that each state has authonomy in certain degree to implement and manage their own laws, as long as this does not affect or contradict the Constitution. This system of government was implemented in the XVIII century as a way to ensure the individual liberties of americans.
I think it's important because scientists need to be able to communicate.
Think about why you write a lab report. When we write lab reports, we are effectively communicating how we did our experiment, our results, and what we think about those results.
We need to have transparency and be able to replicate results in order to know if they are accurate to our hypothesis. Theories are not 100% proven. We only know what we are able to observe and all measurements have their limitations.