What causes droughts?

What are geographical processes for Droughts?

• I am still not sure how Droughts actually happen.. so give something like this.... something leads to>something leads to this> something leads to>something happen at the end? like step by step how Droughts start and finishes

• Answer:

  Droughts are somewhat natural to all temperate climate's because the geological pass thru point's of mass's of soggy (cloud's) are gigatonne limited. (that is they are funnel's, the linear mileage length of air (low pressure) is propelled by where the hi pressure guide's this mass. Hi pressure is drought-low pressure is many thing's drizzle-black thunderstorm's-all low pressure stuff, so the geology of Western USA make's massive storm's like what's hitting the midwest, not depend of a pass to funnel their sogginess, but are super storm's. No room for more