WILL GIVE 40 POINTS, BRAINLIEST, STARS, THANK YOU, AND MUCH MORE!

Can anyone help me with this? The full question is:

Why do historians regard Jefferson as a great president? How might America be different today if Jefferson had been truer to his principles?

but I already have the idea written out for the second part. ( How might America be different today if Jefferson had been truer to his principles?)

So.. Can anyone help me with the first part? I will be soo grateful if you do!!


AGAIN,
all I need help with is this question:

Why do historians regard Jefferson as a great president?

THANK YOU SO MUCH IF YOU CAN HELP