Answer:
It's the 2nd one I think so I'm pretty sure
Answer:
New innovative ways to build the ships and keep people safe
Explanation:
^^
D river's to they have a water Resource
These alliances that took place before World War 1 in a way started the war. For an example, Germany was in an alliance with Hungary and when they declared war against Serbia, Germany had to fight with them, and so on, finally creating World War 1. Within weeks, Germany declared war with other countries that declared war with others, creating a "domino effect" which just means that most countries just started fighting with one another, either because they declared war with them or because their allies did.
~Hope I helped!~
Test at the Battle of Somme
British forces firstly used tanks during the time of the Battle of the Somme in September 1916. They had a dramatic effect on German morale with also proved effective in crossing trenches and wire entanglements. But they lost to break through the German lines.