Well,
I believe the Economic variables tells economists if an upturn or downturn has begun.
Well the only constitutional change that resulted from the election of 1800 was the twelfth amendment requiring separate electoral votes for president and vice president. First election where both parties ran candidates and actually campaigned. There was a tie between Thomas Jefferson and Aaron Burr. Because of the election of 1800, the 12th Amendment was passed, making the ElectoralCollege simpler.
It causes slave rebellion and anti-colonial uprising. They founded the first black republic in modern history that they called Haiti.
The Articles of confederation was weak in that it had no power to tax, it couldnot enforce the laws in the constitution and couldn't maintain an army.In this case, the central government couldn't accoplish anything because it had no authority as all powers were placed on the states.
The Shays rebellion demostrated to the governement the need for a strong central government, one that could stand firm on basis of its laws and the constitution.This was achieved through the first revolution under the new government that led to the formation of a central government with strong powers and control.
In addition to that, the articles of confederation was weak because it prohibited the collection of direct taxes on income and property yet these taxes were necessary to facilitate the payment of war debts and to enable the country have a working economy.Shays rebellion exposed these weaknessess fro correction.