What act set the tone for the westward expansion of the united states of america by establishing that new states would be formed and admitted to the united states, instead of allowing existing states to expand their territory?

 B)the Northwest Ordinance

Explanation: The Northwest Ordinance is the reason that the US has fifty states of varying size instead of 20 states with vast land. This act established the procedure by which new territories could become part of the United States.

our current president donald trump

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.