Question

what did the missouri compromise establish? lands for native american reservations limits on the spread of slavery to new states property for transcontinental railroad development

Explanation:

The Missouri Compromise (1820) established a boundary (36°30′ parallel) to limit slavery's spread to new states: slavery was prohibited north of this line (except Missouri) and allowed south. The other options relate to different historical topics (Native American reservations, railroad development) not tied to the compromise.

Answer:

B. limits on the spread of slavery to new states