Crop growing and stock raising were introduced during the historic period.

A new wave of foreign ideas was introduced during the postwar period of military occupation.

Beer seems to have been introduced as imports during the period of isolation.

The currency was introduced during the period of French occupation.

Coconut palms were introduced to the area during the colonial period from the Philippines.

French was introduced during the colonial period and retained as the official language upon independence.

Qualification positions for European competitions were introduced during the period.

The official language is French, which was introduced during the colonial period.

The laws, some of which were introduced by the British during the colonial period, are still vigorously enforced.

Christianity was introduced during the period of European colonization.