Natural selection is the change of a species traits and characteristics over time to adapt to its environment. Over a period of time, the species will change and evolve because of its changing traits to adapt.
Answer: Technology
Explanation:
Technology is the component that is composed of methods, process, skill, ability and knowledge.It is used in various fields like business, medical ,internet , computing etc. for betterment of operation and carrying out task.
According to the question, technology played a major role for development of economy in U.S as technology lifts the production and making of goods and services much better .It provide developmental environment by facilitating business by cheaper rates for production, quality operation, better services,improved working etc.
Answer:
During the 1950s and early 1960s many Americans retreated to the suburbs to enjoy the new consumer economy and search for some normalcy and security after the instability of depression and war. But many could not. It was both the limits and opportunities of housing that shaped the contours of postwar American society.