Spices
Trade goods like gun and gun powder, spices, and perfume and sugar. and salt.
Spices.
riches
so he can get their land
a trade route to asia
INDIRECTLY.The success of the Ottomans in overrunning Constantinople in 1453 effectively closed off European direct trade with East Asia over the Silk Road. This forced Europeans to seek an alternate route to East Asia. This started the exploration period. However, there was nothing that Muslims said or did to convince Europeans to choose this outlet and the Ottomans would have been more than willing to be trade-intermediaries with East Asia. However, European States (other than France for Anti-Habsburg reasons) had a very antagonistic relationship with the Ottomans and did not want to have serious trade relations with them.
The crusades
They did not get along because the Aboriginals wanted to trade their furs for European goods, but the Europeans didn't want to.
Because they wanted to find out an alternative route that would allow to bypass the Middle East Muslim countries, avoid the trade monopole of the spices and other valuable goods held by Venice and Genoa and get directly to trade with Japan, China and other East Asia countries.
East Asia had resources that Europe did not, such as certain spices or silk.
Because they held religious beliefs that prohibited contact with foreigners
Too find a shorter root for the spice trade they had with Asia