Scientists use radiocarbon dating to estimate the age of artifacts
They hoped to gain wealth and land
D. Chinese government officials were selected based on their abilities rather than their family history.
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