Who was crowned the first czar of Russia?

Ivan the Terrible
Romanov
Stalin
Peter the Great

What do you think was a drawback to this method of calculating distance

Which lake receives up to 9 million visitors each year, covers more than 90,000 acres, and was created by denison dam? a. the grand lake o' the cherokees b. lake thunderbird c. lake eufaula d. lake texoma

What river systems the worlds earliest known civilization develop ?