What aspects of modern law, such as that practice in the United States, began in classical Rome?

answer; taking up arms to defend the nation;

b or c im pretty sure

1. temperance, abolitionist, suffragist

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.