What led to the end of the open range?

the answer to this question is the third option. hope this

an era of negotiation.

is that an answer to your question?

mickey : )

explanation:

why not?

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.