This is very much true. They are a group of jobs and industries that are related by skills or products.
Answer:
active citizens should strive to be informed citizens
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
I believe the answer you are looking for is B<span />