What was the major factor contributing to the destruction of the way of life on the plains

i believe its the indians

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

a marriage ending by the death of a husband or wife.

explanation:

i don't see your choices but i'm just gonna give you my answer.