How do you think the idea of agriculture spread along the paths on the map?

Some 8,000 years ago people living around the Aegean Sea began to spread into southern Europe, bringing their farming skills into a continent that had only seen hunter-gatherers for tens of thousands of years, according to the paper. ... This DNA confirmed that these early farmers were moving themselves across Europe.

Explanation:

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