Which physical feature made trade difficult with lands north of China? the Gobi desert
the Plateau of Tibet
the North China Plain
the Himalayas

the gobi desert

Explanation:

it's the gobi desert cause they made it difficult to trade across long distance

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.