The use of technology such as telephones and computers means that money exchanges and other financial transactions can be
a. converted to prices in any currency
b. made instantaneously
c. based on u. s. dollars all over the world
d. sensitive to variations in any currency

okay so the answer is actually A- converted to prices in any currency. I just took the test -gradpoint

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:

by 1880, germany had more rail lines than great britain and russia.