Answer:
Champlain returned to Europe in 1629 because he had been forced to surrender New France (a) to the British Forces.
Explanation:
On July 7th, 1628, the English force led by the Kirke brothers succeeded in capturing a supply convoy bound for New France, severely impairing the colony' ability to resist attack. This eventually led to the surrender of Quebec in 1629, during the Anglo-French War (1627 - 1629). Champlain, desperate, surrendered, and no battle ensued.
