The Virginia plan was proposed in order to favor states with a large population. It said that sates should get votes based on the number of people within each state.
The New Jersey plan was drafted in order to favor smaller states as every state no matter their size had a single vote on pressing issues.
I was elected by Virginia with their 3 votes. Deleware didn't want me but they only had 1
A plan that combined the New Jersey and Connecticut plans stating that their would be two houses an upper on where each state had two representatives and a lower house where the number were based on population of each state
This compromise was due to argument from the north and south on weather slaves should be counted as people when used as property. The compromise eventually came down to the slave would be counted but only every 3 slaves out of 5 henceforth the 3/5 compromise.
The electoral College elects elects the next president. Each state gets a certain number of member based on population. Then those members cast their vote on the next president based on their states interests
This is the compromise that states came to in order to balance out the interests of the large and small states. It is the same as the conneticut plan stating that the house would be broken into two parts one with a vote per state and one where voters were based on a states population.