The two hyperboles (I suppose I wont have to explain what that is) in the paragraph are:
1 - ’Tis not the affair of a city, a country, a province, or a kingdom, but of a continent – of at least one eighth part of the habitable globe.
2 - ’Tis not the concern of a day, a year, or an age; posterity are virtually involved in the contest and will be more or less affected.
The parts in bold shows you exactly where the hyperbole is.*
*Note that the hyperbole doesn't occur on one word, it occurs in sentences or passages.
Hope it helped,
BioTeacher101