During the period from the 12th to 15th centuries CE, what was the land from the Gulf of Finland in the west to the northern Ural Mountains in the east (including the Lake Ladoga regions of modern Russia) known as?
What name was given to members of the Protestant Reformed Church of France from the 16th to the 18th centuries, many of whom emigrated in the late 17th century, who were inspired by the writings of John Calvin in the 1530s?
Songhai Empire, more than 1,000 years old and from the 15th to the late 16th centuries one of the largest Islamic empires in history, was where?
