Right-clicking on a blank spot where address/location bar should be and select Navigation Bar.

thank you

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thanks for the reply. However this doesn't have a result. The space where the location bar should be is the total page...all blazing white. the image attached is the part I am missing. That is my bookmarks bar.

Thanks again ideato. While the specific answer you provided didn't immediately solve the problem you did give me an important clue..ie the name of my missing piece which is 'navigation bar'. I googled this as missing.....and the firefox menu (Mac user here ) has a drop down box 'view' you then click on 'toolbar' and there it was..'navigation bar' .I clicked on that and dah dah it appeared. Thanks.