What spanish invaders were brave, resoucre, ruthless and destructive

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 private property rights serve as an incentive in a free enterprise economy ?

What from the columbian exchange had perhaps the biggest impact on the world?