Answer:
The United States was not the only or even first country to end slavery.
Explanation:
In 1862, President Abraham Lincoln issued the Emancipation Proclamation declaring “all persons held as slaves… shall be then, thenceforward, and forever free,” effective January 1, 1863.
There is Russia, France and United Kingdom
The correct answer is A. a primary group.
Primary group refers to individuals following other people's example when doing something. Here, Mary started using the language of that particular group and dressing like them. Thus, they represent her primary group in her life.
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