The spread of slavery and greed for land.
Answer:
who ever dose not know history is doomed to repeat it
Explanation:
<em>these lights are also known as fairy lights .. these lights are used in days of christmas days for lightning and decoration ..these got introduced in 1930's..</em>
Historically, they burned the people infected with it(to death if not already dead)
The treaty of versailles ended world war one
