When Mexico Won Its Independence from Spain in 1821

When Mexico won its independence from Spain in 1821:

A) it was much smaller in area than the United States at the time.
B) California became a major American trading partner within half a decade.
C) its Native American population was relatively large compared to its non-Indian population.
D) its leaders founded new missions in California to assure continued Catholic power.
E) Americans immediately began settling in California in large numbers.