Answer:
Option d) Gulf stream
Explanation:
The Gulf stream along with the drift in North Atlantic which is the northern extension of the Gulf stream is a warm current of Atlantic ocean.
It has its origin in the Gulf of Mexico and extends upto the tip of Florida along the coastlines of the eastern part of the NewfoundLand and the U.S before passing through the Atlantic Ocean.
These are responsible for the milder winter climates of Northern Europe and the U.S
The answer is a political system
I believe The answer is B. Hope this Helps :)
Theodosius the Great, was Roman emperor from 379 to 395. He is best known for making Christianity the state religion of the Roman Empire and great architecture projects in Constantinople.