Ethereum is the second largest cryptocurrency platform by market capitalization after Bitcoin. It was generated as a reward of computations performed to secure blockchain. It is platform for more than 1800 different  cryptocurrencies including 45 top 100 cryptocurrencies by market capitalization.

Ethereum was founded by Vitalik Buterin and Gavin Wood through Etherium Foundation developer. It was proposed in late 2013 but went live On 30 July 2015. In 2016 due to exploitation of flaw in The DAO project's smart contract software and theft of ether worth $50 million , it separated into two blockchains.

1- Ethereum (ETH) new version

2- Ethereum Classic (ETC) 

The Ethereum Virtual Machine (EVM) is the runtime environment for smart contracts in Ethereum.

My Analysis: 

Since I have used ethereum blockchain network it was quite satisfactory for me. I invested much in this cryptocurrency and withdrawal many times. The fact I faced is that its transaction gas fee has gone sky high. Sometimes it is 14 to 16 dollars and that is so high in crypto world more than the largest Cryptocurrency named Bitcoin.