A compound sentence contains two independent clauses joined by coordinator the coordinators as as followed: for, and, nor, but, or, yet, so,
A complex sentence has an independent clause joined by by one or more dependent clauses. A complex sentence always has a subordinator such as Because, since, after, although, or when or a relative pronoun such as That, who, or which.
Personification. The author is treating the river like a person. When an object/animal/thing is talked about like a human being, then it is personification
An infinitive composes the words "to" plus the "simple verb". Infinitives can be used as nouns, adjectives or even adverbs. In the given sentence above, the part of the sentence that contains an infinitive is, "to enrich". The infinitive "to enrich" is used as an adverb in the sentence modifying the verb
"decided".