How do historians support their conclusions?

What misguided strategy caused lord william howe and the british to fail?

How did slavery end in the united statesa. it ended with the emancipation proclamationb. it ended when the union won the civil warc. it ended with the fifteenth amendmentd. it ended with the 13th amendment

15 points and brainliest if right which of the following was not a european achievement during the middle ages? gothic style architecture the canterbury tales by geoffrey chaucer troubadours grand canal