Student or Learner
45)Jeremy did not accomplish this through one big change. He accomplished thousands upon thousands of little changes among the people he encountered. He did not accomplish this through proposing
policies to the leaders of countries. He appealed to the hearts of
people who cared about their own countries as well as the
world. He held a vision, he set goals, he enrolled many diverse
groups of people, and he took action for his vision through
What is the role of "upon" here? "thousands upon thousands "