This eventually lead to it being obsolete almost imminently after the United Kingdom entered World War II.

In 1818 the United Kingdom and Spain entered into a treaty forbidding the importation of slaves into Spanish territories.

The plot is thwarted, and the United Kingdom enters the First World War, having kept its military secrets from the enemy.

The United Kingdom and Guatemala shall enter into agreements designed to reestablish full and normal relations between them.

The United Kingdom entered World War II in September 1939.

The United Kingdom first entered the contest in 1957, the second contest held.

Only five days later, the United Kingdom entered the First World War.

It was the last time to date that the United Kingdom did not enter the contest.

This was referring to the Queen's Jubilee year and that the United Kingdom had just entered into a second recession.

The United Kingdom enters the first round of negotiations for European Economic Community membership in Rome.