Martin Van Buren was the eighth President of the United States (1837-1841), after serving as the eighth Vice President and the tenth Secretary of State, both under President Andrew Jackson.
It's C, 1901-1910. Good Luck
At the time of the arrival of Europeans, the indigenous population was estimated to be just below 40 million people. After the contact with European diseases it is said to be significantly reduced and estimates suggest that in 1650 this population could be around 8-9 million people. (this is just an estimate, but it's the best from all the offered answers).
For me i think his conquest of land is the most significant
he lead armies to take over Rhodes, part of Hungry and Belgrade
greatly increasing the area of the Ottoman empire
his leadership skills are very noteworthy