She sowed that a woman can do everything that men can. x - She sowes that a woman could do everything that men could. x She is able to sow as much distrust in men as any other woman. To sow > to bring to life something that is not good . You sow hatred (towards others), but I don't . You reap what you sow

I suppose you mean "showed" in both cases, in which case these sentences mean two different things. The first would be in the present tense -- she may have shown it some time ago, but the implication is that that demonstration of equivalence is still valid in the present. The second would be all in the past, and the implication is that the past demonstration of equivalence is either not necessarily still valid, or just not relevant any more. Or perhaps you meant "shows" rather than "showed" for the second? That means that the demonstration is in the present, but that the equivalence again was relevant in the past. For example, "In her review of prehistoric customs that has just come out, the author shows that a woman could do everything that men could".

She showed (or shows) that a woman can do everything that men can do. She showed that a woman could do everything that men could do. Either could (can) be correct.... depending on the tense you mean.

Thank you so much Joel and Judy.

I would match the singular/plural of both parts of the comparison: "She showed that a woman can do everything that a man can" "She showed that women can do everything that men can"