Question

Which statement BEST describes the alliance systems in the years leading up to World War I? Which statement BEST describes the alliance systems in the years leading up to World War I?
A) Each country in Europe was aware of the diplomatic agreements between the other countries.
B) Pre-war alliances were made in secret and elevated diplomatic tensions within those governments.
C) International groups like the League of Nations failed in their efforts to prevent military build-ups.
D) The alliances were entered into mainly for economic reasons rather than for political or military ones.

Answer 1

B) Pre-war alliances were made in secret and elevated diplomatic tensions within those governments.

Or sometimes the fact that alliances were being made was announced publicly -- but the negotiations about the alliances were conducted behind closed doors.  And often the terms of the alliances were kept secret, so that only the parties involved knew the full details.  This contributed to an attitude of escalating nervousness and tension as the nations of Europe maneuvered for strength over against their perceived adversaries.