Meanings of become unavoidably in English

In this architectural dialogue over his sketches, Somerset's head and Paula's became unavoidably very close.

Provisions being all imported, were sold at high rates, and the hesitating colonists became unavoidably subservient to the cupidity of the traders.

It was a nervous nudging of chairs around the Cabinet table, a manoeuvre forced upon our plodding Taoiseach when two places became unavoidably vacant.