Acanceled us treasury check for the purchase of alaska is an example of which of the following?

A Primary source document is the correct answer.

Explanation:

The primary sources provided first hand evidence of an object, person or event. Historical and legal documents, accounts, eyewitnesses, pieces of creative writing, audio and video recording, etc are primary sources. These are documents that are created during the event.  It enables the researcher to get as close as possible to the historical event or the period under study. The canceled US Treasury check for the purchase of Alaska is a primary document.

Alaska was purchase by US from Russia on 1st August 1867 for 7,200,000 Dollars.

b

explanation: