In the 1867 Canadian Confederation, three provinces of British North America—New Brunswick, Nova Scotia, and the Province of Canada (which upon Confederation was divided into Ontario and Quebec)—united to form a federation, becoming a fully independent country over the next century.
Naram Sin (2254-2218 BCE) was a ruler of the Akkadian empire. Under his rule, the empire reached its maximum strength, as he expanded his empire up to the Mediterranean Sea and Armenia. He is believed to have ruled over his empire for 56 years.
I'm pretty sure (1.) is A, and I know for a fact that (3.) is D because slavery was a regular practice between quarreling tribes. I have no clue what (2.) is. Best of luck.