Answer:
Iron, Pepper, Sugar, And Ivory.
Explanation:
The un-employment rate in the us during 1934 was 21.7% and The further weather drought problems in the US Midwest continued and some 35 million acres of farmland were utterly destroyed and a further 225 million acres were in danger.
The most correct answer here would be the growing of crops nad the taming of animals by early hmans. The Neolithic revolution is often seen as the transition from hunter-gatherer societies to societies of agricultural production and husbandry.
The Romans weathered a Germanic rising in the late fourth century, but in 410 the Visigoth Kong Alaric successfully sacked the city of Rome.