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Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

The case of brown v. board of education was started when a. oliver brown's daughter had to walk 21 blocks to the nearest school when an all-white school was only 7 blocks away. b. oliver brown's son was caught at a sit-in at the local school district. c. oliver brown's son was unable to participate in the school's all-white football team. d. oliver brown's daughter was unable to attend high school because there were none for her to attend.

Plz hurry in the vedic age, what types of goods were traded most often? a.goods that there is a shortage ofb.goods that are expensive and rarec.goods that there is a surplus ofd.goods that are cheap but rarebe the