Why is treason the only crime mentioned in the U. S. Constitution?​ a.​All of these are reasons why treason is the only crime mentioned in the U. S. Constitution. b.​Because American colonists feared giving their central government the amount of power wielded by the English king. c.​Because the legal codes of some colonies contained differing definitions of treason, the Constitution needed to provide a definition that ensured uniformity. d.​Because the legal codes of some colonies did not contain the crime of treason.