(i) Americans are united at time of hardship. (ii) It concentrates on the

The idea of unity.

Explanation:

Americans are united at time of hardship. It concentrates on the idea of unity and its importance. This statement tells about the importance of unity in life which enables the Americans to bear hardships and make them strong. These hardships make a connection between Americans as well as a bond of love and respect for one another. They live their life like brothers and take the country to the heights of success.

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.