Which of the following factors was most important in controlling the distribution of copper mines in the u. s. versus iron mines in the great lakes region

The factor that was most important in controlling the distribution of copper mines in the u.s. versus iron mines in the great lakes region were: different ages and geologic histories of the rocks.

Explanation:

United States, especially North America is very well known for the copper mines where as iron mines in the great lakes region is for the mining of iron.It was very important for them to control the mining process because the ages of the raw materials were contrasting. Similarly the the history and the geography of rock also aided for the factor in the mining process.

The answer is 1-plate movement along fault lines