The sentences from this class come from the following sources and, in some cases, have been slightly adapted:

Ringmar, Eric. History of International Relations: A Non-European Perspective. Cambridge, UK: Open Book Publishers, 2019. https://doi.org/10.11647/OBP.0074. This is licensed under a CC BY 4.0.
Watson, Richard T., Berthon, Pierre., Pitt, Leyland., Zinkhan, M. George. Electronic Commerce: The Strategic Perspective. This is licensed under a CC BY 4.0.
Krutz, Glen. 2019. American Government 2e. Rice University. This is licensed under a CC BY 4.0.
Michaels, Athanasios. Oregon’s History: People of the Northwest in the Land of Eden. This is licensed under a CC BY 4.0.

Non-Sequenced Verbal Classes

Verbal Strategy: Fundamentals