January 20 in history: First African-American sworn-in as US President, Hong Kong ceded to Great Britain, and lots more!

From the first official Basketball game played in Massachusetts to the first African-American US president. We've got it all covered! Let's dive into today's history.

1841

 Hong Kong ceded to Great Britain.

(Photograph:WION)

1885

Lamarcus Adna Thompson receives patent for roller coaster ride.

(Photograph:WION)

1892

First official Basketball game is played in Massachusetts, US.

(Photograph:WION)

1942

Nazis hold Wannsee conference to discuss “Final Solution of the Jewish question”.

(Photograph:WION)

2009

First African-American, Barack Obama sworn in as US President.

(Photograph:WION)