General Structure and Writing Style. The function of a research design is to ensure that the evidence obtained enables you to effectively address the research problem logically and as unambiguously as possible.
ALLEGHENY RIVER HISTORY. Location: A river rising in north-central Pennsylvania and flowing about 523 km (325 mi) northwest into New York then southwest into Pennsylvania again, where it joins the Monongahela River at Pittsburgh to form the Ohio River.
From northeast to southwest, the Allegheny Mountains run about 400 miles (640 km). From west to east, at their widest, they are about 100 miles (160 km).