When a writer does not know who performed the action in a sentence, the writer can still write a grammatically correct sentence by using the active voice.
using the passive voice.
ending the sentence with an infinitive.
ending the sentence with a preposition

The missionaries who appear in the novel are colonists from britain portugal spain italy

Based on thoreau's transcendental beliefs, why might he have written an essay opposing the war? to explain the individual's responsibilities within a corrupt society to begin his own political career to call attention to the ways in which the government was essentially good to express his lack of interest in societal issues

What is the meaning of "full tide" as it is used in this sentence? before i could explain to her the differences of language in this world, she was embarked on the full tide of another subject. a long and involved argument an inaccurate representation a detailed and lively discussion an uncontrollable flood