Two things that increased american interchanges in the late 1800s were "b. the telegraph and telephone," since both of these creations significantly accelerated correspondence and made it more productive.
Domestic Policy. Washington supported Secretary of the Treasury Alexander Hamilton's Federalist financial plans, including a national bank and a tax on whiskey. The latter led to a minor revolt in Pennsylvania, the Whiskey Rebellion, and Washington mobilized troops from neighboring states to quell the uprising.
B. Fourteen points
Wilson was a bit of an idealist, and his fourteen point plan was his idea of a perfect outcome following WWI. However, his plan was for the most part not followed by the other reprentstives of the other allied powers.
If I am correct it must be A: They left many records.
