Several have mentioned The required 120v circuits include 2 small appliances for kitchen counters, 1 for the laundry, 1 for the bathroom(s). But
But I think the main problem you run into is 210.6.A Occupancy
210.6 Branch-Circuit Voltage Limitations. The nominal voltage of branch circuits shall not exceed the values permitted by 210.6(A) through (E).
(A) Occupancy Limitation. In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conductors that supply the terminals of the following: (1) Luminaires
(2) Cord-and-plug-connected loads 1440 volt-amperes, nominal, or less than 1∕4 hp
This limits the voltage to 120v nominal between conductors forfor luminaries and cord and plug connected loads 1440 nominal or less.
This means all those 240v240V devices other countries use would not be code compliant in the US with regard to lighting and appliances as most are under 1500w1500W.