For the earliest tribes 是表示“對(duì)于最早的部落”,為介詞短語(yǔ),但不是做時(shí)間狀語(yǔ).
sufficiency為主語(yǔ),the concept of 做前置定語(yǔ).
was more important than 是謂語(yǔ)短語(yǔ)
quantity 做賓語(yǔ),the concept of 做前置定語(yǔ).
句子主干：sufficiency was more important than quantity.
希望我的回答能夠幫到您,祝好!請(qǐng)問(wèn)for the earlist tribes 在句中是什么成分呢？前置介詞短語(yǔ)做定語(yǔ)，修飾sufficiency。sufficiency是earlist tribes的sufficiency。