Imaginary Numbers are not Imaginary Imaginary Numbers were once thought to be impossible, and so they were called Imaginary (to make fun of them). But then people researched them more and discovered they were actually useful and important because they filled a gap in mathematics ... but the imaginary name has stuck. And that is also how the name Real Numbers came about (real is not imaginary). Imaginary Numbers are Useful . Complex Numbers
Whether your spouse inherits your entire estate depends on your state's laws. If you die without a will, your estate is divided according to state intestacy laws. If you had a will, your spouse's share is partly dependent on what you left her and whether you have surviving children or parents.
When Husband dies, the trust is divided so that Husband's share, $2,000,000, is put into Trust A (now irrevocable), and Wife's share, $2,000,000, is put into Trust B. Wife cannot sell any of the property in Trust A, but she can use it and pocket all of the income and interest that it generates.