NEED HELP NOW

primary-

a singed treaty that ended the war

A letter written by a solider

A diary written by the general

secondary-

A documentary about the war

A text book chapter about the war

hope this helps :)

where is the picture of the graph or table?

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.