On April 1
No pivotal events are recorded on exactly April 1 — the closest is Commodore Perry forces the opening of Japan on March 31 (1 day earlier).
This week in history (Mar 29 – Apr 4)
In July 1853 a United States naval squadron under Commodore Matthew C. Perry steamed into Edo (Tokyo) Bay, its 'black ships' a deliberate display of steam-powered force intended to end Japan's two centuries of self-imposed seclusion under…
The Marshall Plan, formally the European Recovery Program, was the principal U.S. initiative to rebuild Western Europe after World War II.
On 4 April 1949 twelve nations signed the North Atlantic Treaty in Washington, D.C., establishing the North Atlantic Treaty Organization.
On 2 April 2025, President Donald Trump signed Executive Order 14257 imposing a 10 percent baseline tariff on nearly all US imports plus steep additional 'reciprocal' rates on dozens of trading partners, a measure he branded 'Liberation…