Hey there! I'm happy to help!
There are three principal reasons for exploring the new world: God, Glory, and Gold.
God- Spain wanted to spread Christianity to the people of the New World, and creating territories gave them many opportunities to act as missionaries towards the native people.
Glory- many conquistadors wanted to bring glory to themselves and to Spain. It would make Spain appear impressive to have many territories, and many explorers wanted to become famous for it.
Gold- this doesn't always necessarily refer to gold as it represents wealth in general, but one thing that some conquistadors such as Coronado were looking for were were lost cities of gold, along with other deposits of gold and precious metals.
Have a wonderful day and keep on learning! :D
