Surewhich of the following was learned from the experience of the articles of confederation? o a. centralized authority is dangerousob. states willingly subordinate local interests in order to achieve national goals. c.economic problems were best handled at the local levelo d. some problems were better handled at the national level than at the local level. resetnext

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:

the answer is b hope that

after the aryan's settled in india they changed for the better i bellieve they changed from nomads having to keep moving to being farmers   they were aswell avaible to turn the ganges river into farmland.   which is great they added a big affect on farming as we know of it today.

in 1776 adam smith developed the theory of moral sentiments. i hope this