Có quan điểm cho rằng: “Kinh tế thị trường định hướng xã hội chủ nghĩa ở Việt Nam thực chất là đang phát triển theo kinh tế thị trường của chủ nghĩa tư bản”. Quan điểm đó đúng hay sai. Tại sao?

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 noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.