An on-going source of tension along the Texas-Mexico border was . a.
livestock theft
b.
unstable government
c.
the spread of disease
d.
a lack of public schools

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation: