Helped by falling mortgage rates, sales increased in every  region of the country.
Helped by falling mortgage rates, sales increased in every eastern region of the country.
Благодаря падению ставок по ипотечным кредитам продажи выросли во всех регионах страны.
Благодаря падению ставок по ипотечным кредитам продажи выросли во всех восточных регионах страны.