Offshore Trading Account Trading Stocks, Options , Futures On Offshore?

Trading stocks, options , futures on offshore? - offshore trading account

1.What is an online brokerage account, which says I can on equities, options and futures contracts to trade the high seas? What is it? Please explain to me clearly and in detail explain what the word way.Please.
What are the pros and disadvnatages?

2.Guys, please give me some suggestions if you know any online brokerage for buying and selling of shares Exchnage not only the U.S. but around the world (Australia, Japan, China and Europe)

Thank you.