What was the main reason that carnegie invested in the frick coke company

Andrew Carnegie invested in Frick Coke Company because he wanted to invest in a company that could supply coke to his steel companies.

Overall Andrew Carnegie saw the immense potential in the expanding railroads and he wanted to invest in a wide variety of companies that were connected with supplying the growth of the American railway system.

Intially he only bought 11% of the ocmpany in 1880. Within the next 7 years he had bought over 74% of the company.

this isn't a question and if you're going to list things be kind and use commas.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.