Mum will not cook mutton tonight.
This is the negative form of this sentence.
Answer:
I assume you put in the wrong subject this seems more of a economics question than anything but attendance at live performances have most likely decreased with the advancement of technology due to The ability to live stream performances for free
I think the answer is "In 1867, the United States bought Alaska from Russia for $7 million". When you ask the question "when" the question is asking about time. In this excerpt, when is answered by "in 1987". while the sentence supported it is the event that happened during that time, which is " The US bought Alaska from Russia for $7 million.