How did alliances affect europe in the early 1900

The alliance system during the early 1900s caused these nations to get reckless, therefore pushing the nations to the first world war.  Plz mark brainliest!

- tobacco.

- "rolfe reacted to consumer demand by importing seed from the west indies and cultivating the plant in the jamestown colony. those tobacco seeds became the seeds of a huge economic empire.the tobacco economy rapidly began to shape the society and development of the colony. growing tobacco takes its toil on the soil."

< 3

it would have to be gasioline