If america was an empire

1776-the usa declares independence

1783-the usa becomes a monarchy and a republic

1792-the first american empire is formed

1803-the usa now has alot of states

1859-the usa has north america parts of africa asia and pacific and has all of oceania minor and some others the first female monarch btuns 22 years old polk is president

1865-the american empire colonises south america

1899-the first american empire collapsed

1929-the second american empire collapsed

1945-the third american empire collapsed

1956-the fourth american empire collapsed

1978-the fifth american empire collapsed

1989-the sixth american empire collapsed

1999-the 7th american empire collapsed

2019-the american republic is born

2020-the american states is born

2021-the american federation is born