Pakistan recognized the People’s Republic of China on 5th January 1950, shortly after its establishment in 1949. This early recognition laid the foundation for the strong bilateral relationship that developed, particularly after the 1963 boundary agreement.

Pakistan recognized the Republic of Indonesia on 27th December 1949, the day Indonesia gained independence from the Netherlands. This act strengthened Pakistan’s diplomatic ties with Muslim-majority nations in the post-colonial era.

Pakistan’s first constitution came into force on 23 March 1956, turning the country into the Islamic Republic and ending its status as a dominion[12](https://historypak.com/constitution-of-1956/).

The Treaty of Lausanne, which recognized the sovereignty of the Republic of Turkey, was signed on 24 July 1923 in Switzerland[26](https://thediplomaticinsight.com/understanding-treaty-of-lausanne/).

Muhammad Ali Jauhar, a prominent leader of the Khilafat Movement, edited Comrade, an English-language newspaper launched in 1911. It advocated for Muslim rights and played a significant role in mobilizing public opinion during the freedom movement.

The Khunjerab Pass, located at 4,693 meters in the Karakoram Range, is the primary border crossing between Pakistan and China. It is a key part of the Karakoram Highway, facilitating trade and connectivity under the China-Pakistan Economic Corridor (CPEC).

The Sino-Pakistan Boundary Agreement, signed on 2nd March 1963, demarcated the border between Pakistan and China in the Gilgit-Baltistan region. It strengthened bilateral ties and resolved territorial disputes, notably involving the Shaksgam Valley.

Pakistan's first constitution was adopted in 1956, which declared the country an Islamic republic; the other years correspond to independence and later constitutions.

The Constitution of the Islamic Republic of Pakistan is the highest law of the land, making option d correct.

The Supreme Court is the highest judicial body charged with constitutional interpretation, so option c is correct.