Final answer:
In the 1700s, the term 'cousinocracy' was used to describe the interrelated, upper-class families in Virginia who maintained their power and influence via marriage, making the statement true.
Step-by-step explanation:
The term 'cousinocracy' was indeed used to refer to Virginia's upper class in the 1700s. This term implies that the wealthy and powerful families in Virginia's society were closely interrelated by marriage, maintaining their power and wealth within a tight circle. This close-knit upper class was influential in political, economic, and social life, strengthening their position through strategic familial alliances.
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