Answer:
Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany, marking the beginning of World War II.
The infinitive can appear by itself, or it can be part of a larger infinitive phrase.
Examples of infinitives:
To run
To walk
To cook
To understand
To make
The root word bi means two.
One example of this root word being used is the word bicycle.
The root word is used so as to tell people that this bicycle has two wheels.
A unicycle is a riding device that has one wheel.
To talk about shooting the elephant or for a thrill
