I know that you said 'opening line', but I found all of that information kind of hard to fit into a handful of sentences. As a result, what I've written might really differ from your perceptions of the story. I hope that it's not too different and that it works for you. Good luck.
Answer: Answer is B. Trans-Saharan was just land and they tried sea but I believe they failed. Silk Route was land and Sea, since for Asian countries sea was more accessible. Hope this helps, just learned this last year.
Explanation:
An action that started in the past i think atleast
Assuming that you want to fix the vague sentence, it would be better if the sentence is like this :
The school computers arrived with preloaded games. These were the second batch that the school had received
hope this helps
