Which of the following was a pre-columbian mound builder culture

In what year did vladimir lenin and the bolsheviks seize power in russia? 1885 1900 1917 1961

Why did trade along the silk road increase after it fell under mongol control? o people stopped using camels the mongols paved the road o it became safer to travel the mongols were better traders next question ask for

Why is james madison significant in regards to the bill of rights?