Why does Article I of the Constitution prohibit the passage of ex post facto laws? A. Such laws would allow police officers to search a place or person without probable cause.
B. Such laws would make cariminals out of people who committed the act before it was illegal.
C. Such laws rob a person of their rights to a free and fair trial.
D. Such laws prevent a person from being arrested without knowing what they are being charged with.

C. Such laws rob a person of their rights to a free and fair trial.

Explanation:

the answer wold be b) travel among nations should be regulated by an international organization

answer: born in saint-dié, in the vosges department, france, he studied law, and was called to the bar at paris in 1854,[2] but soon went into politics, contributing to various newspapers, particularly to le temps. he attacked the second french empire with great violence, directing his opposition especially against baron haussmann, prefect of the seine department. a series of his articles in le temps was later republished as the fantastic tales of haussmannlaxupa (1868).[2]

explanation: