<span><span>Primary sources are original materials on which other research is based, including:<span>original written works – poems, diaries, court records, interviews, surveys, and original research/fieldwork, andresearch published in scholarly/academic journals. </span></span><span><span> Secondary sources </span>are those that describe or analyze primary sources, including:<span>reference materials – dictionaries, encyclopedias, textbooks, andbooks and articles that interpret, review, or sythesize original research/fieldwork. </span></span><span> Tertiary sources are those used to organize and locate secondary and primary sources.<span>Indexes – provide citations that fully identify a work with information such as author, titles of a book, artile, and/or journal, publisher and publication date, volume and issue number and page numbers.Abstracts – summarize the primary or secondary sources,<span>Databases – are online indexes that usually include abstracts for each primary or secondary resource, and may also include a digital copy of the resource.
The unprecedented levels of production in domestic manufacturing and commercial agriculture during this period greatly strengthened the American economy and reduce dependence on imports. The Industrial Revolution resulted in greater wealth and a larger population in Europe as well as in the United States.
