Examlex
The critical decisions to be made in any observation study are: deciding what exactly is to be observed; deciding how to conduct the observation; and deciding how to record the observation.
Westward Expansion
The 19th-century movement of settlers into the American West, encouraged by beliefs in Manifest Destiny and opportunities for land and wealth.
Cotton Kingdom
A term used to describe the Southern United States in the 19th century, where cotton farming heavily influenced the economy and society.
Cincinnati
A city in Ohio, United States, known for its historic architecture, vibrant arts scene, and economic contributions, particularly during the 19th century as a major inland port.
Cyrus McCormick's Reaper
An invention by Cyrus McCormick in the 1830s, this mechanical reaper revolutionized agriculture by greatly increasing the efficiency of crop harvesting.
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