Imagine that you are researching the reconstruction time period in u. s. history. your teacher tells you that you are allowed to use sources from the internet. which of the following would most likely be a valid source that you could use in your research?

an online article from the Journal of Southern History

Explanation:

When doing research, it is important to understand how to identify a valid source. The Internet has a wealth of information, but not all of it can be considered valid. Of the answer choices listed here, the best source would be an online article from a historical journal. Journals such as the Journal of Southern History contain articles written by historians who have thoroughly researched their subjects. These articles are also reviewed and edited by other experts on the subject matter. Sources like blogs or free online encyclopedias are not always written and edited by subject experts, so the information they contain might not be valid. For this reason, these sources should be avoided when doing research.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals

answer; limbic system;