Question

in which year did mexico close the border to american settlers? 1820 1830 1840

Explanation:

To determine the year Mexico closed the border to American settlers, we refer to historical knowledge. In 1830, Mexico implemented policies to restrict American settlement, particularly in Texas, to maintain control over the region and limit the influence of American settlers. The other options (1820 and 1840) do not align with this historical event.

Answer:

1830 (the option corresponding to 1830, assuming the options are presented as checkboxes with 1820, 1830, 1840; the correct one is the 1830 option)