题目
题目
简答题

Hunter-gathering humans began bartering their surplus items in exchange for items they needed. Communities would trade this way with their geographically close neighbors. However, with the rise of _____________, advertising became necessary so producers of surplus goods could be sold to alert those far away that they had items on sale.

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思路分析
The question describes early barter among hunter-gatherers and notes that advertising became necessary as trade expanded beyond immediate neighbors. First, consider the core idea: in small, closely connected communities, surplus goods can be exchanged through direct barter without needing broader awareness. As trade grows ......Login to view full explanation

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