Which of the following was a product exported by the olmec, is closely associated with their name, and lends strength to the argument that they were the originators of the mesoamerican ballgame?
a. rubber
b. cotton
c. corn
d. jade

A) Rubber was a product exported by the Olmec, is closely associated with their name, and lends strength to the argument that they were the originators of the Mesoamerican ballgame. The Olmec were the first civilization in Mexico after the advancing development in modern-day southwest Mexico (Chiapas) along the border with Guatemala. The word "olmec" is Nahuatl, which is an ancient language spoken among different Mesoamerican tribes.

A. southerners underestimated republicans eagerness to end slavery.