Because their society is unstable. They allow anyone and everyone in from many different cultures. Hence the cradle part.
Answer:
i think A
Explanation:
A actually gives more sense to me, so yup.. i think it's A
C. Democrats.
The rest do not work in this time period.
1. Cyrus McCormick
2. Sewing Machine
3. Samuel Morse
4. Eli Whitney
5. Cotton Spindle
6. Cotton gin
7. Charles Goodyear
8. John Deere
9. Francis Lowell