The central theme which is similar to the two passages is:
The way through which the two passages show this central theme based on their historical context are:
From the first passage, we can see that the narrator talks about the promise which was made by President John Fitzgerald Kennedy about going to the moon and how it looked impossible, but nine years later it was made possible and there was the belief that anything can be achieved.
The second passage talks about the journey on the Mayflower which probably talks about the Pilgrims who left Europe on their way to Europe to get their religious freedom.
During their journey, they encountered some rough seas and thought they could not make it, but when they finally arrived, they were optimistic about what they could achieve.
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https://brainly.com/question/267656