How did the Crusades help lead to European exploration? pls help ty!

How can you use a maps legend to plan your travel

Ineed , i need to create a power point in life science here is a picture explaining a little what the topic is about, me with some information for my slides : (

With these question would be nice i needs them in a hurry which nation leads eastern europe in nuclear energy usage? a ukraine b lithuania c slovakia d solvenia which eastern european nation is popular with skiers? a czech republic b estonia c bulgaria d none are