Why was exploration important in early america to european countries?

Exploration was very important for many reasons. Some of those reasons would include finding good and new land for plantations and colonies, making maps, picking what is needed and what is not for expansion. It was all unknown land so they needed as much information possible in order to make better use of their resources.

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

hope this and have a fantastic day!

                                                    -wolfiewolffromsketch