Help Please?? please help

1. What events led to the United States declaring war on Mexico?

At the beginning of the war, why was hitler allowed to continue his aggression without resistance from other european countries

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