Which factor most directly resulted in great britain entering world war l

The correct answer is: German troops invaded France through Belgium on August 4th, 1914, as part of the Schlieffen Plan.

Not only had Britain promised to defend Belgium under the Treaty of London of 1839, moreover German control of Belgium would have been seen as a serious threat to Britain.

(a) he opposed english settlement on native land and launched attacks on the colonists until his death in 1739.