Who was sent to mexico to negotiate the rio grande as the border of texas.

treaty that ended the Mexican War and made boundaries of Texas and gave the USA California. he was sent to Mexico, by James K Polk, to negotiate an agreement whereby the Rio Grande would be the southern border of Texas.

answer; i believe that the correct answer is (chronological order);

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.