A cause would be the arrival of the Portuguese on the coast of Benin
You could honestly just google the words in the right collum. You are likely to find them there. It would be faster too!
Answer:
Defeat at the battle of Gettysburg
Explanation:
The battle was a crushing defeat for the Confederacy. Union casualties in the battle numbered 23,000, while the Confederates had lost some 28,000 men–more than a third of Lee's army.
