How did Southemers feel about California's application for statehood as a free state?

The Southerners opposed California's application for statehood. California's application for statehood caused an uproar because it was applying as a non-slave state. The slave states and non-slave states avoided conflict by always having an equal amount of slave and non-slave states. However, California would upset this balance.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.