a main effect of speculative investment during the 1920s was that it\ncontributed to the stock market crash…

a main effect of speculative investment during the 1920s was that it\ncontributed to the stock market crash of 1929.\nled to great economic growth.\nresulted in stocks gaining value over time.\nled to overproduction in the agricultural industry.
Answer
Answer:
A. contributed to the stock market crash of 1929.
Brief Explanations:
La inversión especulativa en la década de 1920 creó una burbuja en el mercado de valores. Los inversores apostaban por subas excesivas en el precio de las acciones sin un respaldo fundamental adecuado. Esto llevó a una sobrevaluación generalizada y, finalmente, al desastre del mercado de valores en 1929.