A holiday on 25 March in Greece celebrates the final recognition of Greece as an independent nation following the Greek War of Independence against the Ottoman Empire. What year did this happen?
1832 After the main hostilities ended in 1830, Turkey finally and formally recognised Greece as independent from the Ottoman Empire in the Treaty of Constantinople, July 1832.
31 March, the birthday of César Chávez, is recognised as a holiday in the US states of California, Texas, Arizona and Colorado. What role did he play in the history of the USA?