As a result , the state of Surakarta ( including Mangkunagaran ) were incorporated into the province of Central Java in 1950 .
Mangkunagara VIII faced extreme difficulty in maintaining the sovereignty of his state .
The state of Surakarta ( including Mangkunagaran ) were incorporated into the province of Central Java in 1950 .
Mangkunagara VIII faced extreme difficulty in maintaining the sovereignty of his state .