The challenge is this:
With a POD between 1774/76 until 1920, you must unify North America (including Greenland, St. Pierre & Miquelon and Bermuda, Hawaii), Central America (including Panama and the St. Andrew Archipelago), the Caribbean (including Curaçao, Aruba and Trinidad & Tobago) into one country before 1920.
* But with some rules:
This country must have Spanish, English and French as co-official languages.
The country may respect the religion of each region but if possible, there may be "programs" to make Protestants gain a majority in Catholic regions.
Seek ways to reduce Racism and reduce cases of discrimination by at least 50%.
If possible, limit the use of weapons
If possible, have at least two other political parties than OTL.
* Some of this information may be used:
United States has at least 6 time zones
The Electoral College exists but is reformed and there is a second round where two candidates pass if they do not obtain the required number of voters to win.
Representatives last 4 years instead of 2 as in OTL.
There may be rights for Native Americans similar to what Canada does
If possible, keep the capital in Washington DC
If possible, slavery is abolished and no war of secession occurs (depending on the year of the POD)
There should be at least one Hispanic or French Canadian President by 1920.
There should be some kind of equality between Anglo Americans and Hispanics in politics and other jobs.
Do you accept the challenge? What would you do to reunify half the continent before 1920?