Http://www.un.org/un70/en/content/70ways
The correct answer to this open question is the following.
You forgot to attach the section "English mariners improve seamanship." However, we can comment on the following.
Jamestown colonists had to use every resource they had wisely because they faced many problems when they arrived at the North American territory in 1607.
At the beginning of the settling, the colonists had many problems to survive due to the lack of supplies, the weather, and the general conditions of the new land. They could overcome the situation with the help of the Native American Indians. However, years later the relationship got complicated and different issues started to create serious issues between Native Indians and white English settlers.
So that is why they had the develop maritime skills to take advantage of the rivers and the sea to succeed.
The answer is shaping. It is a conditioning model
used chiefly in the experimental analysis of behavior. The technique
used is disparity reinforcement of successive estimates. It was make known by
B. F. Skinner with pigeons and protracted to dolphins, dogs, humans and other
species.
Specialization is where the production of a limited number of products focuses on a nation or individual. It is often forgotten to produce other goods and depends on trade for the other goods.
