Well the purpose of the congress was to discuss the various injustices that the british empire had committed upon the colonists; most recently it was the series of intolerable acts that were viewed as an abomination by many colonists. The congress tried to get britain to revoke the intolerable acts, but this was unsuccessful. Think of it as a precursor to the war, as the delegates urged the colonies to form their own militias in the event that war occurred. Hope this helped
The defeat convinced many Indians in the Northwest Territory that they needed British support to prevent American settlers from pushing them further out of their lands.