How did the crusades to weaken the byzantine empire?
(medieval christian europe 330-1450)

i need answer choices

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.

because it took place after the war of 1812 had come to an end.