Why did new trade routes grow following alexander's conquest

Select all that apply. the tang dynasty interacted with foreigners by: a letting them buy property in china. b accusing them of corruption and the downfall of the dynasty. c trading with them, especially japan and korea. d teaching them to become monks. e attacking them with military forces.

Which of the following best describes us involvement in the korean peninsula today?

Can someone me write a paragraph on this topic i feel confused