sewing machine : In some way the women working with the machines gained a new skill, and were seen as important for the industry. The sewing machine allowed clothing to become a mass produced item which increased the social acceptance of the sewing machine.
washing machine : they changed the lives of women because they didn't have to hand wash everything anymore it made things more convenient for them.
i hope this helped <3
Physically, as well as psychologically, the Berlin Wall was significant because Berlin was the only city physically separated by the Cold War between the Soviet Union and its Eastern Bloc and Western allies. ... It was possible to limit the entire Cold War to this one nexus point. So I think it was necessary