The aspect of historical context that this excerpt most reflects is a development in technology.
Bicycles were the most popular means of transport before the car was invented, but when first automobiles started to appear, everybody noticed how much more effective those were in comparison to bicycles. That is why more and more cars were produced, and fewer and fewer bikes.
Sustainability is important for a very simple reason: we cannot maintain our quality of life as human beings, the diversity of life on earth or earths ecosystems unless we embrace it. In order to have healthy communities, we need clean air, natural resources, and a nontoxic environment.
Answer:
I assume you mean 'imperative,' not 'impartive.'
You could say:
Run!!!!!
Get down! Play dead!
Explanation:
