Yes.
Yes, it has sister banks in several countries, including the UK (Barclay's), Germany, etc.
No one. It is still Bank of America.
Wachovia bank is a large bank in the United States. However, Wachovia bank is the not the leading bank in America in bank lending. Bank of America is the leading bank in lending.
To give you a non-bias opinion, It is a good bank. It is also America's most popular bank.