England's indian allies were the algonquians.

False.  They were allies of the French. It began in 1603 when they met Samuel de Champlain where he formed an alliance with some of the tribes.  Later the French traded Muskets with them and fought alongside them during the French-Indian War also known as the Seven Years’ War. The allies of the British were the Iroqouis.

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president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers