Misc: Which English actor won his first Oscar for a role in 'Arthur' at the age of 77?

Questions

In 1955 U.S.'s First automobile ---------- legislation is enacted in Illinois.?

In 1977 ---------- National Day.?

In 1978 Soyuz ---------- is launched.?

In 1820 ---------- is proven nonpoisonous.?

In 1861 Leipzig Observatory discovers short-period (6.2 yrs) Comet---------- .?