Until you add the passages, this question will be a "PAINE" to answer
Answer:
A system of roads can help out with trade and boast economy
Related to WW1:
Assassination of Franz Ferdinand
Lusitania
Unrestricted Submarine Warfare
Zimmerman Note
NOT Related to WWI:
Invasion of Poland
Munich Conference
Nazi Soviet Non Aggression Pact
Hope this helped! :)
the answer is <u><em>B.)keeping the British navy occupied </em></u>
