Answer: Gold rush
Explanation: in 1848 james w. Marshall found gold at sutters mill in coloma, California The news of gold brought approx 300,000 people to California(aka Western frontier) from The rest of the United States and abroad. Including immigrants
New Jersey Plan proposed by William Paterson of New Jersey
<span>Its proposal followed the Virginia Plan (written by James Madison and presented by Edmund Randolph) with a two-house legislature with representation that depended on state population.</span>
Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
In general, the railroads had a positive impact on the relationship between eastern cities and the Great Plains, since they allowed for the transportation of people and goods between these two areas in ways that were far quicker and more efficient than before.
