Some mistakes, I think: Senegal, Tunisia and Djibouti were controlled by France, Tanzania, Namibia and Cameroon where controlled by Germany, Libya was controlled by the Ottoman Empire and Italy, Turkmenistan was part of Russia and Iran was an independent state.
In 1914 the British owned a part of Iran but later Afghanistan gave it back.Like that they had land from all the countries on this list,but they did not have the entire country.