Samuel Insull was an Anglo-American innovator

Innovator

An innovator in a general sense, is a person or an organization who is one of the first to introduce into reality something better than before. That often opens up a new area for others and achieves an innovation.-History:...

 and investor

Investor

An investor is a party that makes an investment into one or more categories of assets --- equity, debt securities, real estate, currency, commodity, derivatives such as put and call options, etc...

 based in Chicago

Chicago

Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 who greatly contributed to creating an integrated electrical infrastructure

Electric power transmission

Electric-power transmission is the bulk transfer of electrical energy, from generating power plants to Electrical substations located near demand centers...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Insull was notable for purchasing utilities

Public utility

A public utility is an organization that maintains the infrastructure for a public service . Public utilities are subject to forms of public control and regulation ranging from local community-based groups to state-wide government monopolies...

 and railroads using holding companies, as well as the abuse of them. He was responsible also for the building of the Chicago Civic Opera House in 1929.
Samuel Insull was born in London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

, the son of Samuel Insull, a tradesman and lay preacher who was active in the Temperance movement, and Emma Short.