Black is the least reflective color because it absorbs all light
There were many reasons for the Westward Expansion that conducted masses of Americans in the 19th century to the West. The most important were:
1) JOB OPPORTUNITIES.
2) MORE LAND.
3) MORE FARMING POSSIBILITIES.
4) FASTER TRANSPORTATION.
5) FREEDOM FOR RUNAWAY SLAVES.
Byzantium/Constantinople was conquered in 1451, but the empire continued to decline starting around the 18th or 19th centuries. It officially died in WWI. As for how long it was a major threat to Europe, the empire's prime was the 16th century, under Suleiman the Magnificent.
US, Germany, UK, and Russia
Answer:The death of his wife is the reason
Explanation:
I suspect that as an experienced cold war warrior he also appreciated that a tactical nuclear submarine that was virtually undetectable would shift the balance too far from the stalemate that was required for world peace.
