There might be some mistakes that make this topic untouchable for some. But looking at the broad picture, here are some facts that many seem to have overlooked.
1. Here is list of six factors that many have jumbled up in a single list. Nope; they are indeed in two series, namely
A – the upward series and B - the downward series.
A. The upward series: 1. the growth of nationalism, 2. the escalation in territorial disputes, 3. Intensified and intricate system of alliances, and 4. a heightened race for arms
B. The downward series: 1. the decline in mutual trust between nations especially neighbors and 2. a drop in mutual regard
Now, first thing is to put an ‘and’ between the A and the B series, but not a comma because there are only two lists.
Next, take the first (upward) series: put a ‘comma’ and the ‘and’ before the last item namely, ‘a heightened race for arms’.
Then, take the second (downward series): join the two items in the series with an ‘and’ without the comma, since there are only two items in the list.
Now please review choice C in the light of the above explanation.
C. Some of the most important long-term or structural causes of the First World War were [A 1. the growth of nationalism across Europe, 2.escalation in territorial disputes, 3. intensified and intricate system of alliances
, and 4. a heightened race for arms]
and [ B 1.the decline in mutual trust between nations especially neighbors
and B2.a drop in mutual regard ]
The theme for this complex question came from an old OG question given in the link
manifestations-of-islamic-political-militancy-in-the-first-79870.html?fl=similarThanks for the feedback. If you think, however, that the question under current discussion isn’t worth it, sorry guys, you can kick it out.