Answer:
Block Chain is a system of recording information that makes it difficult or impossible to change, hack, or cheat the system.
A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.
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A 50-year-old African American man
Answer:
There are different phases of railroad expansion with the innovations in technology.
Explanation:
Few of the technological innovations are described below that leads in railroad expansion more rapid.
1. Centralized Traffic control (CTC) is introduced in 1960's that is used to control the traffic on railroads using different signal control.
2. In 1990's after computer technology involvement, railway ticket and reservation system is automate and being centralized. That makes the railroad expansion improve.
3. Bullet train technology has been introduced, that makes the railway trains more faster.
4. Electric trains has been introduced to use green energy and reduce the dependency on the fuel to make environment clean and green.
Yes. Feedly will help me create an effective personal online environment. I am able to keep up with all the topics that matter to me most. Feedly is able to help me discover insightful sources from publications and blogs. Feedly is also able to uniquely offer clean, minimalist reading experience optimized for productivity.
the answer is Headers should be descriptive of the cell content, The font size should be at least 18-point. hope this helps!!!
