What historical events happened in the us that begin with a letter x?

Historical events in the U.S. that begin with the letter "X" are quite rare. One notable example is the "Xenophobic reactions" during various periods, such as the Chinese Exclusion Act of 1882, which significantly restricted Immigration from China due to widespread anti-Chinese sentiment. Additionally, the term "Xerophytic" can refer to the adaptation of certain plant species in the U.S. desert regions, though this is more ecological than historical. Overall, events specifically starting with "X" are limited in American history.