Vocabulary 

Topography

Source Sentence-

"Depending on numerous factors, such as topography and psychology, the riflemen carried anywhere from 12 to 20 magazines, usually in cloth bandoliers, adding on another 8.4 pounds at minimum, 14 pounds at maximum." p.5

Context Clue Explanation-

We had to figure this word out with our own logic from other sentences near the source sentence because the author does not give any clues of what it means in the source sentence. 

Original Sentence-

To know how much space we will working with in our new apartment we had to get into details and look at the topography of the apartment in the description map. 

Resignation

Source Sentence- 

Some carried themselves with a sort of wistful resignation, others with pride or stiff soldierly discipline or good humor or macho zeal. p.19

Context Clue Explanation-

The author gives an example and antonym for this word in the source sentence. 

Original Sentence-

With bitter sweet feelings my whole dance group took my resignation to end my dancing career with them and go on to a higher group. 

Serenity

Source Sentence-

"...and the immense serenity flashes against your eyeballs-the whole world gets rearranged-and even though you're pinned down by a war you never felt more at peace. 

Context Clue Explanation-

In this source sentence we get examples in the sentence of what the word means, clearly we understand the meaning. 

Original Sentence-

The peaceful serenity you feel after you have done your meditation is priceless.