I have 3 questions:
1- Where can I find the historical data of stocks and cryptocurrencies, etc. as
.CSV file for free?
2- Where can I get online data of stocks/cryptocurrencies for free? I mean a free API that I can get data from it in real-time and use it in my application/software.
3- Is web scraping/crawling to grab online/offline such data from the websites illegal in the US?