Perspective refers to the position a person understands and view events happening around them.

Significance is the amount of importance given to items from the past.

Empathy means to "Put yourself in someone elses shoes" which means to be aware of peoples thoughts and feelings.

contestability refers to the explanations that arent certain and are still up for debate

Evidence is proof or information gathered from historical sources

An alliance is a political, military or economic agreement between people, groups or nations

Imperialism is a policy by which a country increases its power by gaining control over new territories to create an empire

Machine guns were improved. Many were capable of firing up to 600 rounds of ammunition per minute

Facing one machine gun was similar to facing 250 soldiers with standard rifles

In 1915, Germany introduced poison gas as a weapon of war. Bombs contained chlorine

Poison gas attacks were so horrific that the use of chemical and biological warefare

Aerial warcraft was conducted during World War 1 for the first time

At first, small planes were used to scout for enemy positions. Later planes armed with machine guns were used in aerial combat, also known as dogfights

Militarism is the belief that all nations should build and maintain a strong armed forces for prepared defense against attack or promoting national interests

In continuity and change historians refer to aspects of the past that have remained the same over time as continuities and aspects that don't remain the same as changes

Cause and effect is used to identify, examine and analyse the reasons why events have occurred and the resulting outcomes.

The British army first introduced tanks to World War 1 in September 1916 at the battle of Somme in France

They were successful at overcoming many obstacles but tanks were designed and built so fast they often broke down or got stuck in muddy trenches.

The development of the telephone and wireless radio systems allowed for instant reports from the battlefield to the command centers.

Telephone lines had to be laid in each new location of battle meaning they were easily damaged by artillery

Protecting your own sea lanes or striking at the enemy was an essential part of war effort

U-boats were widely used during World War 1, first by the germans to attack and sink trade ships carrying food and vital goods between allied countries

When analysing a sources, the purpose is why the source was made

When analysing a source the message is what the source is telling us

When analysing a source, the perspective of the source is the position, or point of view of the source fromthe person who created it

When analysing a source the technique is how the source is getting the message across

When analysing a source, its usefulness is how useful it is based on what it does and doesn't do

A graph is a diagram that shows the relation between variable quantities