Which of the following was one of the ways christianity spread across europe?
a. parish priests established schools to attract new converts.
b. traveling friars lived and preached among the common people.
c. the pope ordered interdicts, which established new monasteries.
d. secular rulers excommunicated those who would not convert to christianity.

Traveling friars lived and preached among the common people.

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:

answer is 1935

because gandhi led a march the sea in 1930 and 5 years later he did it again