in Japan about 800,000 people died during the war which greatly affected there army and country.
The new environment allowed for an exchange of new foods like corn. Crops that were grown the Americas and vice versa were able to be shared between two cultures.
It is of course impossible to tell how long the Constitution will last, but it seems very likely that it will last as long as the Magna Carta since it was such a revolutionary document in its own right.