how did william h. seward aid us expansion?\nseward sent missionaries to hawaii to spread us…

how did william h. seward aid us expansion?\nseward sent missionaries to hawaii to spread us culture.\nseward concluded the first us treaty with japan.\nseward negotiated the end of the russo - japanese war.\nseward signed a treaty with russia to buy alaska.
Answer
Brief Explanations:
William H. Seward was the U.S. Secretary of State under President Andrew Johnson. In 1867, he negotiated and signed the Alaska Purchase Treaty with Russia. This acquisition added a vast territory (Alaska) to the United States, which was a significant act of U.S. expansion.
- Sending missionaries to spread culture is not a direct act of territorial expansion in the context of this question.
- The first U.S. treaty with Japan was the Convention of Kanagawa in 1854, negotiated by Matthew Perry, not Seward.
- The end of the Russo - Japanese War was mediated by Theodore Roosevelt (1905), not Seward.
Answer:
Seward signed a treaty with Russia to buy Alaska.