¿Cuántas alteraciones se encuentran en la escala de Re mayor? me podrían ayudar con esta pregunta por favor

Which statement best describes standard oil in the late 1800s? standard oil controlled only a small number of the nation’s oil refineries. standard oil was a single business that operated in a small region. standard oil controlled only the means and methods of oil production. standard oil owned ninety percent of all oil refineries in the united states.

How many senators are there from each state? a. two c. one b. three d. the number depends on the state’s population

Wha industry did the refrigerated rail car impact the most