Definition of "on account of"

[…] and His Imperial Majesty further agrees to pay to the British Government the sum of Three Millions of dollars, on account of debts due to British subjects by some of the said Hong merchants (or Cohong), who have become insolvent, and who owe very large sums of money to subjects of Her Britannic Majesty.

1842 August 29, Treaty of Nanking

The rebuilding of damaged stations is proceeding slowly, on account of the shortage of building materials and the pressing needs of housing, but steady progress is being made.

1951 March, E. J. Tyler, “Post-War Recovery on the Netherlands Railways”, in Railway Magazine, page 157

‘My brother... is at Radley, on account of my parents thinking it a bad idea to have both of us at the same school.’‘On account of your being twins?’ said Adrian.‘Right, on account of my mother OD-ing on fertility drugs.’

1991, Stephen Fry, The Liar, London: Heinemann, page 26

[…] I had a pretty good notion of the weather conditions generally, on account of I was out in them.

1998, Bill Bryson, A Walk in the Woods: Rediscovering America on the Appalachian Trail, Broadway Books, published 1999, page 213

Truth is I was the kind of fellow who people would run away from when they seen me coming on account of I was so full of facts and names and places and families I had to tell about.

1999, Craig S. Womack, Red on Red: Native American Literary Separatism, University of Minnesota Press, page 216

After that, I resumed walking, on account of it involves little contact with strangers.

2015, Bill Bryson, The Road to Little Dribbling: More Notes From a Small Island, page 84