In general, the most materially advanced and developed countries are focused on extensive development of the secondary sector of their economy. Because secondary sector is made up of Construction and Manufacturing, which the advanced and developed countries would like to focus on.
You are correct the answer is C.
The Jews and the Arabs who both had formed paramilitary and guerrilla armies to fight each other and the British occupying leadership.
The fact that the global ecosystems form broad latitudinal belts is mostly because of climatic reasons. It works very simply, the shape of the Earth doesn't allow the sun to heat up the surface equally in every place, so on the equator and around it the sun heats up the Earth the most, as the latitude changes the sun rays become weaker and weaker because they fall at a smaller angle and are dispersing much more, this forms the different climatic regions on Earth thus creating different ecosystems with it, ecosystems that have their borders mostly on the lines of change in climate from one region to another, so we mostly have latitudinal belts of ecosystems.
It would sometimes signify the unity of two separate kingdoms
Easterlies, westerlies, and the trade winds
