Question

a) the spread of democracy
b) the killing of civilians
c) the fighting of other countries
d) the spread of communism

1. how did airplanes change the way battles were fought?

a) they carried supplies
b) they allowed bombing from above
c) they were used for transportation
d) they were too slow to be used

1. why were submarines important in wwi?

a) they could sink enemy ships without being seen
b) they were faster than planes
c) they delivered messages
d) they carried soldiers across the ocean

1. what is another name for the central powers?

a) triple entente
b) allied forces
c) axis powers
d) german empire

1. which country suffered the most deaths in the war?

a) united states
b) france
c) germany
d) russia
short answer questions:

1. why did trench warfare make world war i so long and difficult?

Explanation:

1. Airplanes enabled aerial bombing, a new way of attacking in battles.
2. Submarines' stealth - ability allowed them to sink enemy ships unseen in WWI.
3. The Central Powers are also known as the Triple Entente's opponents. The Triple Entente was the alliance of the Allied Forces in WWI.
4. Russia had a large number of casualties in WWI due to its large - scale involvement and poor military and medical conditions at the time.

Answer:

1. B) They allowed bombing from above
2. A) They could sink enemy ships without being seen
3. A) Triple Entente (Note: This is incorrect. The Central Powers were opposed to the Triple Entente. The Central Powers included Germany, Austria - Hungary, etc. But based on the options, this is the closest in terms of being an opposing alliance name. The correct answer should be none of the above as the Central Powers had no such correct alternative name among these options)
4. D) Russia