3. A major focus of Houston's administration in the newly formed Republic of Texas was -
A
writing a constitution for Texas
B.
planning annexation by the United States
C.
paying debts from fighting the revolution
D.
resettling Texans away from the border with Mexico

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!

it would be a. that is the only one i could think of