Civilization that existed in the Indus Valley.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else

i would say b. or c.