A key technological development that facilitated Western expansion was the

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The sailing ship armed with guns allowed Western powers to travel longer distances and establish military dominance in new territories. This gave them an advantage in expanding their territories through colonization and trade. The galley, trebuchet, armillary sphere, and telescope were also important technological developments, but they did not have as significant an impact on Western expansion.

A Key Technological Development That Facilitated Western Expansion Was the