Japan invades china; ; japan attacks pearl harbor; d-day - according to the events in the timeline, which event below should go in the blank provided?

a tariff is a tax on imports or exports. money collected under a tariff is called a duty or customs duty. tariffs are used by governments to generate revenue or to protect domestic industries from competition.

his speech, he talked about a third alternative, he said if only british government were able to form alliances among countries against germany and if they are able to strengthen  air force and british army, only then they could have prevented germany from taking sudetenland. he believed that germany will continue to expand its territories eyeing in western europe and british territories  are not exempted.  

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b.   they filled a need that other inventions could not:   they provided the first form of electronic communication.   plz mark brainliest

a democratic government