The Roman sword was patterned after the Celtic sword. The Celt sword could be long or short, but was most often short and was double-edged with a blood groove. The short Roman sword was the one Rome used to conquer the world.
The Feudal system that had previously dominated Europe begins to collapse.
Considered divine punishment, the Black Death (bubonic plague) was one of the largest epidemics that plagued mankind.
In early 1330 the first outbreak of the bubonic plague happened in China. Plague mainly affects rodents, but their fleas can transmit the disease to people. Once infected, the infection to other people occurs extremely quickly. The plague causes fever and a painful swelling of the lymphatic glands called bulbs, hence its name. The disease can also cause blemishes on the skin that first have a reddish color and then turn black.
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Explanation:
Remark
Let's look at the two that you can eliminate without much worry. B and C are not going to say much about ecofriendly technologies.
It's between the New Science Lab and A record of Operational Data. The Operational Data might given you a hint about the need to reduce costs, but it won't say much about how to do it.
I would pick D. The science lab has the best chance of employing alternate ways of looking for cost control using ecofriendly technologies. It is a lab after all, and that is the first place one should seek the most modern ideas.
Hitler's power was not checked when the US entered the war. The war with the US was between them and Japan. The USSR did join sides with the allies when Germany broke an treaty. However, the US did win the war between Japan.
