How can a historian determine whether or not a claim is valid?

B. check to see that it is supported by historical evidence.

Explanation:

Accounts of history emerge from historical evidence.

Primary sources are the most important kinds of historical evidence (original documents, artifacts, or other sources of data produced at the time under examination). Primary sources are better valued than secondary sources. Secondary sources usually mean an examination of primary sources, like books or publications. Oral tradition offers unwritten stories, passed on verbally by an eyewitness to succeeding generations.

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live

hello,

the steamboat is your answer.

it seems like its the only form of transportation on the choices.