Building the Suez canal in Egypt is an example of which theme of geography

This is an example of people changing their environment, of influencing it, and in a way of interacting with the environment shapes us humans, too. In geography, this falls under the theme of human-environment interaction.

Explanation: i believes is the right answer

1) union forces launched a surprise attack.

2) more confederate troops arrived by train.

3) union forces retreated.

the answer would be 50's sitcoms reinforced traditional roles for men and women.