Answer:
When writing a restrictive clause, introduce it with the word "that" and no comma. However, if the subject is or was a human being, use "who" to introduce the clause. When talking about people in defining (restrictive) relative clauses, who is preferred to that.
Which poem? There isn't anything besides your question...
Answer: They indicate that Nixon had plans for domestic and international improvements.
Explanation:
On August 8, 1968, in his acceptance speech at the Republican convention in Miami Beach, Florida, Nixon shared his enthusiasm that the hostility with the Soviet Union will be eased. In this particular excerpt, he claims that the<em> "era of negotiation"</em> begins. This indicates that Nixon strove for domestic, but also international improvements. He wanted to improve the United States' foreign relations.