What is the firsthand historical evidence used to support a claim in an argumentative essay called? an expert source a primary source an academic source a secondary source

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

i really do want to but i just don't know it i'm so sorry : (

well we know that it was fought between america and the united kingdom based on that i assume people consider the second war of independence because brtiain and england (uk)   the uk is made up of england and i assume thats why it was considered that

may i have the answer choices?