This depends on the time period but the only time that they spread their influence they didn't do it nicely so i would say the firearm ,"GUN" is the invention that helped them <span />
<span>Brigham Young led the mormons into the Utah valleys salt lake </span>
Children under the age of 15 and people on retirement.
The end of the Front ages(^_-)
The answer is A. The speech given by priest to start a revolution against Spain in Mexico.
