Misc: which is the largest river forming part of the u.s-mexico border?

Questions

In 1979 Merle ---------- dies at age 68. ?

In 1980 Mae ---------- dies at age 88. ?

In 1759 Destructive eruption of---------- . ?

In 1832 South ---------- passes Ordinance of Nullification. ?

In 1874 A patent is granted to Joseph Glidden for ---------- wire. ?