Industrial growth in countries had formerly been markets __1__
hastened regional self-sufficiency and, in the consequence, __2__
hastened the collapse of organized long-distance trade. This
process was intensified by the spread of a new metal, iron.
In almost 1400 B.C. new smelting techniques led to the high __3__
temperatures which could produce an iron superior in
strength to bronze. Probably developing in northeastern __4__
Turkey, this process spread over Europe considerately more __5__
rapidly than the art of processing bronze.This rapid
spread was due not only particularly war and the movements __6__
of people, but chiefly, to the wide occurence of iron ore as well. __7__
Iron was available for smelting in almost every land and, in
efficiency,iron forging offered almost every country the __8__
prospect of economical self-sufficiency. It was eagerly seized __9__
upon, and the bottom fell out of the bronze market and the
general economics. Trade stagnated, ships were laid up, and __10__
a recession set in.

答案及解析:
1. had前加that/which
由that/which引导定语从句

2. 去掉the
in consequence of 为习语

3.almost—about/around

4. developing—developed
过去分词表示该工艺已经开发完成

5. considerately—considerably
两者为形近词，前者意为“体谅地，体贴地”，后者则是“相当地”

6. 在war前加to
此处为due not only to...but chiefly to...的结构

7. occurence—occurrence
拼写错误

8. efficiency—effect
in effect为习语，相当于in fact

9. economical—economic
前者意味“节省的，经济的”，后者意为“经济状况的，与经济相关的”

10. economics—economy
前者意为“经济学”，后者意为“经济”