Compromise of 1850 affected the issues of expansion as its allowed the territories gained in the Mexican-American War to become states.
Compromise of 1850 admitted California as a free state and left Utah and New Mexico to decide for themselves whether to be a slave state or a free state.
Its also defined a new Texas-New Mexico boundary which makes it easier for slaveowners to recover runways under the Fugitive Slave Act of 1850.
Therefore, the Option B is correct.
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