How did steam locomotives lower the cost of transporting raw materials and finished goods?

By not using as much oil to get around, instead using water producing steam!

equal pay act of 1963. the equal pay act, signed in to law by president john f. kennedy on june 10, 1963, was one of the first federal anti-discrimination laws that addressed wage differences based on gender. they felt that this would prevent employers from undercutting future wages for men.