Three mistakes were made when the union army first arrived at petersburg. what were they? (there is more than one)

federal troops allowed the confederates to dig in before attacking the city.

grant did not take into account the need for military supplies to win the battle.

lee was not there to defend it, thinking the union headed to richmond.

the union commanders underestimated the confederate strength.

the union commanders overestimated the confederate strength.

1. Federal troops allowed the Confederates to dig in before attacking the city.

3. Lee was not there to defend it, thinking the Union was headed to Richmond.

5. The Union commanders overestimated the Confederate strength.

Explanation:

die.

explanation:

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.