Do you know this for social studies

According to jean-jaquees rousseau, individuals participating in a social contact agree to be ruled by

The chart shows data on the construction of dreadnoughts, or armed battleships, by 1914. (look at chart provided) a logical conclusion that can be drawn from this chart is that britain and germany were a.)engaged in an arms race. b.)looking for ways to cooperate. c.)hoping not to fight on land. d.)the strongest nations on the earth.

How do you think american life would change greatly, as soldiers went to war in europe?