C HAPTER 6 : D RIFTING A PART
The discussion of the Venetian case follows Puga and
Trefler (2010), and chaps. 8 and 9 of Lane (1973).
The material on Rome is contained in any standard
history. Our interpretation of Roman economic institutions
follows Finlay (1999) and Bang (2008). Our account of
Roman decline follows Ward-Perkins (2006) and
Goldsworthy (2009). On institutional changes in the late
Roman Empire, see Jones (1964). The anecdotes about
Tiberius and Hadrian are from Finley (1999).
The evidence from shipwrecks was first used by Hopkins
(1980). See De Callataǿ (2005) and Jongman (2007) for
an overview of this and the Greenland Ice Core Project.
The Vindolanda tablets are available online at
vindolanda.csad.ox.ac.uk/. The quote we use comes from
TVII Pub. no.: 343.
The discussion of the factors that led to the decline of
Roman Britain follows Cleary (1989), chap. 4; Faulkner
(2000), chap. 7; Dark (1994), chap. 2.
On Aksum, see Munro-Hay (1991). The seminal work on
European feudalism and its origins is Bloch (1961); see
Crummey (2000) on Ethiopian feudalism. Phillipson (1998)
makes the comparison between the collapse of Aksum and
the collapse of the Roman Empire.