Too complex for any one person interpret
Based on the map given, it can be deduced that the landform is the Great Rift Valley.
A landform simply means a natural physical feature of the surface of the Earth that's defined by its forms and location.
From the map, the Great Rift Valley is illustrated. It is a series of contiguous geographic trenches, that is approximately 7,000 kilometres in total length.
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Throughout history, to prevent the Civil War, the south could have accepted President Lincoln and his opinions on slavery and how the US was going to get its money. To have completely prevented a Civil War, the north could have accepted the south's secession.