Tell me the difference of 2019 and 2020(and don't tell me 2019 is past and 2020 is present smh)

Which two factors caused many americans to migrate to the west in the mid-nineteenth century? pick two the texas revolution discovery of gold at sutter’s mill the mexican-american war an interest in american indian culture cheap land prices

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

What event did not contribute to the start of ww11