Misc: Which novel by Michael Crichton was the number one best-selling paperback in 1993?

Questions

In 1809 Papal States annexed by---------- .?

In 1836 Joseph Norman ---------- discovered Helium/founded Nature magazine, born.?

In 1900 Ayatollah Ruhollah ---------- Iran's spiritual leader, born.?

In 1928 ---------- modern Olympic games opens in Amsterdam.?

In 1936 Dennis ---------- actor (True Grit, Blue Velvet, Easy Rider), born.?