Increases in population and the expansion of trade led to increased manufacturing 解释英语句子

题目

Increases in population and the expansion of trade led to increased manufacturing 解释英语句子
Increases in population and the
expansion of trade led to increased manufacturing, much of it
small-scale in character but some requiring significant capital
investment.
麻烦解释一下much of it 后面small-scale 和in character什么关系,后面看不明白

答案