On this day in 1923, the Treaty of Lausanne, settling the boundaries of modern Turkey, was signed in Switzerland by Greece, Bulgaria and other countries that fought in World War I.
On this day in 1969, Apollo 11, the spaceflight that landed the first humans on the Moon, splashed down safely in the Pacific Ocean.
On this day in 1974, the United States Supreme Court unanimously ruled that President Richard Nixon did not have the authority to withhold subpoenaed White House tapes and they ordered him to surrender the tapes to the Watergate special prosecutor.
And on this day in 1991, Manmohan Singh presented his budget speech to the Indian Parliament which led to economic liberalization in India