How did louis and mary leakey balance each other with their special talents?

How was george washington able to defeat the british in the battle of trenton and princeton

Which best describes the impact of the crusades on european exploration?

Can someone answer these question about vasco de gama for me: when? (when did he started his travel)from where & to where? (from where he was and then where he went to)motives? (what was his motives for traveling)accomplishments & discoveries? i will give you 15 star for answering all of these, you so much.