D before the Crusades trade was literally nonexistent between them and after it brought new technology and products such as silk and food etc.
Answer:
C. The damage to all living things caused by insecticides
Explanation:
Late in the 1950s, Carson turned her attention to conservation problems, the ones that she believed were caused by synthetic pesticides. In 1962, she wrote a book about her findings titled "Silent Spring", which brought environmental concerns to the American limelight. Silent Spring was met with fierce opposition by chemical companies, but it still went on to spurr a reversal in national pesticide policy, which led to a nationwide ban on DDT and other pesticides. And it also inspired a grassroots environmental movement that led to the creation of the U.S. Environmental Protection Agency.
From the graph that we have here, the event that is responsible for this change is A product becomes less popular and fewer customers purchase it.
The reason this is the answer is because when e look at the graph closely, we can see that only demand fell from 50 to 40. There was no change in price, it remained at 15 dollars.
A fall in demand even at the same price that a good was sold previously shows us that less people are buying the product. This could be due to changing consumer preference.
Read More on brainly.com/question/3748648?referrer=searchResults
It was the first multicultural empire in history. It was also the first very large empire. Because of this the Empire had to develop ways of running effectively. Roads were built over great distances. Standardize currency. Localized governing systems (i.e. satrapies). It was also the first time Asian powers attempted to invade Europe.
Serve them and work for them as well as to convert to Christianity .. <span />
