Yes, it is true that the<span> core of the Earth is believed to be composed of iron and nickel, since the inner core is believed to be made of iron, with the outer core being made of nickel. </span>
Answer:
It brought them diseases such as small pox, measles chicken pox etc.
The lion is a predator of the giraffes
Back then government was possible when the people came and worked together. By having good leaders they could make stable groups called empires
Hope this helps might be a bit more then you wanted