It was composed of war captives and Christian youths pressed into service; all the recruits were converted to Islam and trained under the strictest discipline. It was originally organized by Sultan Murad I. The Janissaries gained great power in the Ottoman Empire and made and unmade sultans.
The Federalists and their supporters believed that believed in regional
control, with devolution in government, but an equal division of power.
They would have favoured a number of characteristics of modern
government, such as there being different laws in each state and
different representatives for each state proportionally.
I don't really understand the wording of your question but, I can give you it in a nutshell:
The convention was called to address the weaknesses in the Articles of Confederation.