Why would citizens in california today be happy if the convention had adopted james madison's virginia plan"?

If I remember correctly, his plan favored larger states, or states with a higher population. Since California is quite large and has a large population, they would have an advantage when it comes to issues.

The native americans, spanish, french and americans all name places in our state. the word “arkansas” came from the quapaw indians, by way of early french explorers. at the time of the early french exploration, a tribe of indians, the quapaws, lived west of the mississippi and north of the arkansas river.