Two risky trading practices that might have lead to the stock market crash of 1929 were a apr and installment plans b tariffs and war debt c speculation and buying on margin d mortgages and hedge fund management

it should be b probably

a king decides to declare war on a neighboring country without the input of any advisers

a best description that resulted a division among labor in the early farming communities in their period was there was a change in their society in terms of having social roles to develop and change that led complications and divisions in the society.