I could be wrong, but I am pretty sure that the answer is: D, pollution.
In the far past, I presume? Serfdom. The regressive system of working peasants to near-death while in-turn offering them basic necessities and protection on a set plot of land, owned by a feudal lord.
Answer:
ROosevelts speech was a great speech. his speech was definetly successesfull Despite being shot, he carried on. I truly think this inspired many americans.
Explanation: