geography: In which city is the Coliseum located?

Questions

In 1581 Frances ---------- completres circumnavigation of the world ?

In 1588 Frederick II king of ---------- , dies ?

In 1818 Congress decided US flag is 13 ---------- and white stripes and 20 stars. ?

In 1823 Karl Wilhelm ---------- inventor (laid undersea cables), born. ?

In 1841 William Henry ---------- dies of pneumonia and becomes the first U.S. president to die in office. ?