What were two effects of the invention of the compass on China during the Middle Ages?

It enabled the chinese people to navigate the seas and participate in sea trades.

Explanation:

It insipired china to expand It's army and conquer more territory

The first compass was used not to point people in the right direction literally, but figuratively.

CompassKnowing what direction you are facing is a very valuable piece of information. 2.This is especially true if you are traveling: because you can use the information to help find your way or guide your safe return. There’s nothing much worse than getting hopelessly lost in the woods or successfully exploring a new frontier, only to find that you have no idea how to make it back home.

Explanation:

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geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to