For each calculation choose the correct answer written in standard form.

Step-by-step explanation:

FOR A

( 7 * 10^5) * ( 3 * 10^2)

= option B that is 21 * 10 ^ 7

For B

( 2 * 10^5) / (4 * 10^2)

= option B that is 5 * 10^2

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction