As most of the colonial settlers came to America to escape the tyranny of the king of England, the English language was the native tongue of the great majority of all primary settlers in the original colonies.
Canada is an officially bilingual country, there is no "first language" which receives precedence over the other.
English is the official language of The Gambia due to its colonial history as a former British colony. This legacy has resulted in English becoming the language of administration, education, and commerce in the country.
Delaware was colonized by the English, so the colonial language was English.
Most Cheyenne people today speak English if not as their first language certainly as a second language. Officially they speak their own language belonging to the algonquain language speaking people.
Greater than 96% of the world does not speak English as their first language.
As of 2018, about 96% of the world's population do not speak English as their first language.
Approximately 30% of people in New Brunswick speak French as their first language. It is the only officially bilingual province in Canada, with both English and French being used in government services and education.
About 500,000,000 people speak English as a first language, so that would be around 7% of all humans speak English as a first language. As any other language but first, it is estimated that 2,100,000,000 humans speak English, or about 30%.
People speak English and French in Canada, particularly in the province of Quebec where both languages are official. English and French are also spoken in many countries in Africa, such as Cameroon and Senegal, due to their colonial history.
english
England was the first country
Australians speak English because the first Europeans to settle the continent were the British.