Invictus, meaning “unconquerable” or “undefeated” in Latin, is a poem by William Ernest Henley. ... This poem is about courage in the face of death, and holding on to one's own dignity despite the indignities life places before us.
The order of this sentence is inverted.
Inversion means that the order of subject and verb is reversed, meaning that the verb is located before the subject in a sentence, which is clearly the case here.
Natural order would mean that the subject comes first, declarative and imperative are not orders of the sentence but rather types of sentences.
The subordinate clause is a part of a sentence that depends of the main part, and works whithin it as an adjective, an adverb or a noun.
In the sentence:Allison and Andy want to travel to India someday once they saved enough money for the trip.
The nucleus of the sentence will be allison and andy want to travel to india someday and the advervial subordinate clause within the sentence will be "once they saved enough money for the trip".
This way we see how the second part of the sentence by itself has not too much sence but once the two parts make one sentence we see the full sense and meaninf in the sentence