The article of confederation was the original law in forcing document. The document had many, flaws that is why delegates from each state came together in efforts to edit it.
Shay's Rebellion was a serious of protests that out broke with farmers protesting high taxes. This lead to a 6 month protest.
New Jersey Plan
The Constitutional Convention was a gathering of delegates from every state but one. The purpose was to revise the Articles of Confederation, instead they made the constitution.
Great Compromise and 3/5th compromise
The Virginia Plan was a bicameral Legislature. Since Virginia was a large state, they wanted the amounts of votes to be based on population.
The New Jersey plan was a one house legislature designed so that every state no matter size or population got one vote.
The Great Compromise was a compromise between the Virginia Plan and the New Jersey plan, it is a 2 house legislature. The 3/5th compromise was where instead of giving slaves a full vote they each got a 3/5th vote since they are not citizens