when were "egyptian temples" built?
Late fourth millennium BC
Egyptian temple
 so that temples evolved from small shrines in late Prehistoric Egypt (late fourth millennium BC) to large stone edifices in the New Kingdom (c. 1550–1070 BC) and later. 
why would a roman put a little clay foot by a statue at a temple UNANSWERABLE
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Egyptian temple [SEP] Introduction
1550–1070 BC) and later. These edifices are among the largest and most enduring examples of ancient Egyptian architecture, with their elements arranged and decorated according to complex patterns of religious symbolism. Their typical design consisted of a series of enclosed halls, open courts, and entrance pylons aligned along the path used for festival processions. Beyond the temple proper was an outer wall enclosing a wide variety of secondary buildings. A large temple also owned sizable tracts of land and employed thousands of laymen to supply its needs. Temples were therefore key economic as well as religious centers. The priests who managed these powerful institutions wielded considerable influence, and despite their ostensible subordination to the king, they may have posed significant challenges to his authority.