The tigra and i do not know the others but it is in the bible or maby the tigeris
Two groups of Celts from southern Europe invaded the British Isles. The Brythons (Britain) settled on the largest island, Britain. the second groups was called the Gaels; they settles on the second largest island, now called Ireland. The Celts were farmers and hunters.
They sort of established a form of isolationism. They would keep them out of contact with the outside world, so no one was being influenced by the culture or beliefs of the outside world.
The correct answer among all the other choice is D. U.S. naval blockade of Cuba. This event resulted in the greatest threat of nuclear war. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.