Hm, I think the question here calls for "d", although d would be better defined as a focus on one's own culture, and ignoring other cultures, or seeing other cultures through the lense of own culture.
In a way, prejudice could be a good lead, but only if it said "prejudice towards all other cultures" which is not really feasible (one can't know all other cultures).
so, still, d is best, although there can be ethnocentrism without feeling superior
Answer:
Cairo increased interconnectedness because it helped traders to bring products from Africa and India and further East to Europe. These traders could also return with European goods and thus far away regions started becoming more interconnected.
Explanation:
Cairo was a very important city in Afroeurasia and it was a center for trade. In the 14th and 15th centuries, merchants and traders would come to the city by land and sea and it was a center of the Islamic world. Cairo was connected to the Indian Ocean through the Nile, the Red Sea, and the Mediterranean Sea. This was the most important trade route from Europe at the time. The Bubonic Plague was also said to have traveled along this same route as it crippled Cairo and Europe's major port cities.
Answer:
The development in Europe was a result of the other three was World War I.
I assume that your question is based on a text, and since you didn't attach the text, I can only give some general information about this act:
It shifted the focus from nationality to skills, that is, more skilled workers could enter the US, including from Asia. This means that the number of Asian immigrants to the US increased.
