The answer would be "a supporting detail".
In the paragraph that the underlined sentence is in it is talking about how speaking many different, or foreign, languages can help you in life. The underlined sentence supports this because it is giving an example of how speaking multiple languages could help you in life.
It was created when the event was fresh in the person's mind.
The February Days:
<em>The 1848 Revolution in France, sometimes known as the February Revolution (révolution de Février), was one of a wave of revolutions in 1848 in Europe. In France the revolutionary events ended the July Monarchy (1830–1848) and led to the creation of the French Second Republic.</em>
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The June Days:
<em>June Days, in French history, name usually given to the insurrection of workers in June, 1848. The working classes had played an important role in the February Revolution of 1848, but their hopes for economic and social reform were disappointed.</em>
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Here is 1 paragraph for each month, this can help you compare! (so i can keep it shorter and more simple)
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The first slaves were introduced into the English-American colonies by a Dutch trader, who, in 1619, sold twenty of them to the settlers at Jamestown, Va.
