Answer:
Americans experienced a dramatic rise in the availability of new time-saving appliances for the household during this period.
Explanation:
i believe the answer is: Fuel filter
Fuel filter is a part of your vehicles that screens out various form of small particles from the fuel (such as dirts). Every 15,000 miles, there would be a chance that your fuel filter is clogged. If this fuel filter is not changed, it would be hard for you to start your car.
Social media gives access to communication between people all around the world. People may be afraid of reaction and hold back when giving feedback, meanwhile the feedback is more true to heart on social media, due to the lack of the fear of reaction.