Misc: in which continent would you find the yangtze river?

Questions

In which year were the Olympic Games held in St. Louis?

Which African country had its capital transferred to Abuja?

In which year did the Battle of the Little Bighorn take place?

Which king married Charlotte of Mecklenberg Strelitz?

The railway executive, Sir William Cornelius (1843 - 1915), is associated with the construction of which railway?