After WWI, the US culture, economy, and society in general became more __ foreign national regional separate

## Step 1<br />The question is asking about the changes in US culture, economy, and society after World War I (WWI). The options provided are "foreign", "national", "regional", and "separate".<br /><br />## Step 2<br />The term "foreign" implies that the US became more like another country, which is not accurate. The US did not become more like another country; instead, it became more focused on its own development and issues.<br /><br />## Step 3<br />The term "regional" implies that the US became more focused on specific regions within the country. This is also not accurate. The US did not become more focused on specific regions; instead, it became more focused on national issues and development.<br /><br />## Step 4<br />The term "separate" implies that the US became more isolated or divided. This is not accurate. The US did not become more isolated or divided; instead, it became more focused on national issues and development.<br /><br />## Step 5<br />The term "national" implies that the US became more focused on national issues and development. This is accurate. After WWI, the US did become more focused on national issues and development, which is why the answer is "national".