How did the installment plan and buying on margin make the stink market crash worse?

The installment plan and buying on margin contributed to the Stock Market crash by encouraging excessive consumer and investor borrowing. Many individuals purchased goods and stocks with borrowed money, leading to inflated asset prices and unsustainable debt levels. When the market began to decline, panic selling ensued, as people rushed to liquidate their holdings to cover debts, exacerbating the downturn. This widespread liquidation further deepened the crash and its economic repercussions.