Why might the US meet with the Democratic Republic of Vietnam without the Republic of Vietnam present when having peace talks?

your answer will most likely be a.

the answer is a) high entry costs

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.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.