1.discovery of iron
2.the use of iron weapons
<h2>
<u>Answer:</u></h2>
<u>In 26th July 1956 Nationalisation ended in Europe. </u>
The advantage that the social network has is that it enables connections of people all over the globe as it is powered by the internet. This reduces impediments imposed by geographical space and also makes it easier for people with similar ideas to connect