Which is not a factor of migration?

-climate changes

-invention of the wheel

-strong nomadic leadership

-strong fortified settlements

Abird conservation society has a database of every bird spotted by members in the past year. to make this data part of a gis would require tying each sighting to

Space is not completely empty. there are small particles in space. what happens when these particles come together?

Who was the washington lawyer who watched the bombardment of fort mchenry from a british ship and wrote a poem about it? a. francis scott key b. benjamin banneker c. william clark d. zebulon pike