In Duncan v. Louisiana, the Supreme Court ruled that the blank Amendment could be incorporated to the states. The blank clause of the Fourteenth Amendment allowed incorporation to take place in this case.

The correct answer is: "The blank clause of the Fourteenth Amendment allowed incorporation to take place in this case".

The Duncan v. Louisiana case took place in 1968 and gave rise to a significant US Supreme Court decision. They ruled in favour of Duncan. The main argument provided was that the guaranteeing the right to a jury trial was a central aspect in the conception of justice practiced in the US, and its provision should be carefully preserved.

Therefore, the decision appeals to the Due Process Clause that is included in the Fourteenth Amendment of the US Constitution. This clause forces the states to attend and honor the resquests they receive for a jury trial. The exceptional cases in which those requests can be ignored are for the judicial procedures that arise from crimes considered as "petty crimes". This term includes those crimes which are punisahable with a fine of $500 maximum or with, at most, six months in prison.

Answer: - Sixth

-due process