In his letter to President Eisenhower dated back to May 13, 1958, Jackie Robinson addressed the issue regarding black civil rights. He expressed his frustrations on Eisenhower's lack of support for upholding black civil rights at that time and he moved to fight for Federal support on these rights.
After the first use of 'astronaut'
Answer:
The sentence it will introduce will be contrasting to the sentence(s) before that.
Explanation:
E.g. I woke up late. <em>However</em>, I got to school on time.
["However" here contrasted the idea that "I" might be late for school since "I" woke up late]