Gladwell uses many examples from fairly recent history, such as the fall of the Berlin Wall and protest in Moldova and Tehran, yet he repeatedly returns to the civil rights movement of the 1960s. Why? Does doing so strengthen his argument by adding coherence and depth, or weaken it by over-relying on a single example? Explain your viewpoint.

its the first one

explanation:

think about it the answer is in the first paragraph

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.

what does the teacher mean

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.