Answer:
Early humans got to America by crossing the Land Bridge.
Answer:
C
Explanation:
storytellers would often tell their stories orally before there was any way of writing them down
I believe it was the Radio
Answer:changing one amino acid in the protein hemoglobin causes sickle-cell anemia
Explanation:
I just took the test
The cotton gin was an important invention because b) it inadvertently led to the spread of slavery. This was because the demand for cotton grew even more, due to the cotton gin being produced in masses. The cotton gin is "a machine that quickly and easily separates cotton fibers from their seeds, allowing for much greater productivity than manual cotton separation."
