Did chinese discover america?

evidence suggests that the viking Leif Ericson crossed the atlantic and visited North América in the eleventh century.
In this lesson I learned some new vocabulary likes :
■amateur
■hints
■voyage
■utensils
■split up
■spices
■fabric
■bodyguard
■overseas
■disease
■spouse
■pull up
■threat
Some sentences:

■I need more utensils to work in my nail center.
■my professors split up into three groups every class.
■I love to Cook with spices.
■I need fabric to make curtains
■my husband wanted to work as a bodyguard.