Which sentences correctly use commas? select two options. washington was a general before becoming president, and jackson was also a general. for centuries, japan has been ruled by shoguns, and emperors. two english kings fascinate me, richard lionheart and his brother king john. mansa musa who ruled mali in the early 1300s was rich and powerful. after his voyage in 1492, columbus and his men arrived in what they believed to be southeast asia.