What happened in history today: April 4

1905: Kangra earthquake kills 20,000

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1945: Liberation
of Ohrdruf

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1968: Martin
Luther King Jr. shot dead

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1975: Microsoft
founded

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1999: Alibaba
founded

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1905: Kangra earthquake kills 20,000

A massive earthquake measuring 7.8 on the Richter scale decimated the Kangra valley in India’s Himachal Pradesh, killing 20,000 people.

1945: Liberation
of Ohrdruf

American forces liberated the Ohrdruf concentration camp in Germany during the Holocaust, the first such move by the US Army.

1968: Martin
Luther King Jr. shot dead

African-American civil rights activist Martin Luther King Jr. was shot dead outside a hotel in Memphis by James Earl Ray.

1975: Microsoft
founded

Bill Gates and Paul Allen founded Microsoft, which remains among the world's largest software firms.

1999: Alibaba
founded

Jack Ma founded the Chinese internet company Alibaba.

1905: Kangra earthquake kills 20,000

A massive earthquake measuring 7.8 on the Richter scale decimated the Kangra valley in India’s Himachal Pradesh, killing 20,000 people.

1945: Liberationof Ohrdruf

American forces liberated the Ohrdruf concentration camp in Germany during the Holocaust, the first such move by the US Army.

1968: MartinLuther King Jr. shot dead

African-American civil rights activist Martin Luther King Jr. was shot dead outside a hotel in Memphis by James Earl Ray.

1975: Microsoftfounded

Bill Gates and Paul Allen founded Microsoft, which remains among the world's largest software firms.

1999: Alibabafounded

Jack Ma founded the Chinese internet company Alibaba.

1945: Liberation
of Ohrdruf

1968: Martin
Luther King Jr. shot dead

1975: Microsoft
founded

1999: Alibaba
founded