Contrasting what is the difference, if any,
between a nation, a state, and a country? give
hree examples of each. 21a

Country and state are the synonyms which has their own individual powers to govern and implement laws. Whereas Nation is a group of people who live together and share a similar culture and lifestyle.

The people of same race and same cultural background live together in an area which is termed as nation. Country is formed by many different states joined together. Country do not have control over the population and is independent.

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:

can you attach the graph and answer options (: