Answer:
Prohibiting slavery in the territories.
Explanation:
According to the ruling it was decided that Congress had exceeded their authority when ratifying the Missouri Compromise, and therefore "had no power to forbid or abolish slavery in the territories west of Missouri and north of latitude 36°30" (Britannica.com).
Czechoslovakia is the correct answer
Answer:
There
Explanation:
History is the study of life in society in the past, in all its aspect, in relation to present developments and future hopes. ... It is an inquiry into the inevitable changes in human affairs in the past and the ways these changes affect, influence or determine the patterns of life in the society.