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

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

i think it’s will be a yes