Beginning with a small oil refinery, this man‘s Standard Oil began to put competitors out of business. Who was he? 1. John D. Rockefeller
2. Andrew Carnegie
3. J. P. Morgan

They built fortunes in the oil and steel industries since many people used oil lamps adding iron backing help them last longer.

Explanation:

They built fortunes in the oil and steel industries since many people used oil lamps adding iron backing help them last longer. Hope this helps.

well, paralell is parallel. i am providing links to .

hope this !

a series circuit is one with all the loads in a row. there is only one path for the electricity to flow. if this circuit was a string of light bulbs, and one blew out, the remaining bulbs would turn off.

unlike in series circuits, a charge in a parallel circuit encounters a single voltage drop during its path through the external circuit. the current through a given branch can be predicted using the ohm's law equation and the voltage drop across the resistor and the resistance of the resistor.

a parallel circuit has certain characteristics and basic rules: a parallel circuit has two or more paths for current to flow through. voltage is the same across each component of the parallel circuit.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.