What Effect Did Mexico's Winning Its Independence from Spain Have

What effect did Mexico's winning its independence from Spain have on American settlement in the Southwest?

A) The establishment of the new Mexican state made settlement in its territories more difficult.
B) Patterns of American settlement of the former Spanish, now Mexican, territories remained unchanged.
C) American settlers were immediately and forcibly removed from all Mexican territories.
D) American settlement and expansion into the former Spanish territories increased after Mexico gained independence.
E) Americans began to flee the former Spanish territories once Mexico gained independence.