What are the major events in the calendar history of April 30 in the solar calendar?

502-Xiao Yan proclaimed himself emperor and established the Liang Dynasty.

7 1 1 year-The army of the Arab Empire landed in Gibraltar and began to conquer the Iberian Peninsula.

1492 —— Columbus obtained the power of attorney for exploration issued by the Queen of Spain.

1789—— George Washington became the first president of the United States 1803—— The United States bought Louisiana from France for150,000 dollars. The territory of America doubled overnight.

1872 —— The application was established.

1896 —— Li Hongzhang went to Russia.

1900-Hawaii becomes an American territory.

1905 —— The first sports meeting was held in the auditorium of Shi Jing University.

1919-The Paris Peace Conference awarded Shandong to Japan.

1925- Art Deco was born in Paris.

1934-Austrian prime minister taufis used dictatorship against the Nazis.

1936- Italy captured the Ethiopian capital.

1936- Japanese Armed Migration to Northeast China

1945-Arabs evacuated from Haifa in the First Middle East War.

1946- the United States and Britain oppose the establishment of a Jewish state.

1965- A coup took place in Dominica and the president was ousted.

Nixon sent troops to Cambodia.

1975-Vietnam occupied Saigon, the capital of South Vietnam, and the Vietnam War ended.

1977- North Sea oil well explosion

1978- afghan president was killed in a bloody coup.

1979-Deng Xiaoping proposes to create a special economic zone.

1980-beatrix wilhelmina armgard Beatrice ascended the throne.

1999 —— Opening of China '99 Kunming World Horticultural Exposition.

In 2008, Beijing ushered in the countdown to the Beijing Olympic Games 100 days.

20 10——4 1 Expo opens in Shanghai at 20: 0010.