C. where no considerable European settlement is possible
Though all the passage clearly expresses the author's idea to convey that British is superior to all countries, option C is the phrase that most clearly suggest that.
By using the words "no (...) is possible", the author expresses that normally people considered impossible/unfeasible a big European settlement in their lands, but since they are the British Empire, they are superiors and therefore they are the ones who can make it possible.
A compound subject is a subject that consists of two or more subjects joined by a coordination conjunction.
Tone and the meaning of words are related by bouncing off of each other. Your tone of voice expresses your attitude and how you are feeling as you speak and so does actual words being spoken.
"She wants to ensure that her daughters get high-paying positions."
Description. this is because when we use commas especially appositive phrases give more detail. For example: My aunt, Linda, came to my house for dinner. You could take out the name Linda and the sentence still will make sense.
