Which of these was not a factor in the build up to world wae 1 A. a familial dispute amongst monarchs as to who inherited territory in the Balkans B. Alliances that set up a network of countries ready to support one another if they attacked C. Nationalist sentiments feeding national pride and a desire for independence from empires D. Militarism provoking a build up of arms and military forces

A.) A familial dispute amongst monarchs as to who inherited territory in the Balkans

Explanation:

I took the test.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34