Remember the sacrifices of the people who fought at Gettysburg.
Answer:
King Leopold, by the world "civilization", means European civilization, that is to say, all the economic, social, and political characteristics of the European world at his time.
Things like industry, monarchies, christianity, gunpowder based warfare, are the main characteristics of the European world at the time, and these are the things that King Leopold is referring to by the world "civilization".
In the sentence: <span>Long ago, builders erected the Great Wall of China to keep out invaders, in which the underlined word is the "Great Wall of China", it specifies the direct object.
</span>Direct objects<span> can be nouns, pronouns, phrases, or clauses. If you can identify the subject and verb in a sentence, then finding the </span>direct object<span>—if one exists—is easy.</span>