<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">

    <!-- The element "citizenship" will have attribute for "country" which is predefined as "USA" -->
	<xsd:element name="citzenship">
		<xsd:complexType>
		    <xsd:complexContent>
		        <xsd:extension base="xsd:anyType">
		            <!-- below the value for citizenship has been set as "default" to "USA -->
		            <xsd:attribute name="country" type="xsd:string" default="USA" />
		        </xsd:extension>
		    </xsd:complexContent>
		</xsd:complexType>
    </xsd:element>
</xsd:schema>