What contributed to the decline of the Indus Valley civilization? Select all correct answers. The surrounding land was severely deforested. Volcanic eruptions covered the land with molten lava. Indus Valley populations migrated to Central Asia and Africa. Centuries of floods made the soil salty and unfit for farming. Diseases reduced the population.

Which choice describes some of the difficulties john adams faced as presidet

Which statement describes a similarity between the great migration and to this day

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.