Yes.
- Currencies and countries come from Settings → Markets. Once more than one country is enabled, the footer's Show country/region selector shows a selector, prices convert, and checkout follows.
- Languages come from Settings → Languages with Shopify's Translate and Adapt app or another translation app. With more than one language published, the footer's Show language selector shows a selector.
- Theme text (button labels, the cart, form messages) is translatable under Online Store → Themes → Edit default theme content, and translation apps translate it into each language.
- Section content you typed (headings, menus, hours) is translated by the same apps, per section.
Turn on Show currency codes under Theme settings → Product cards if you sell in several currencies, so prices read USD 45 rather than $45.