<span>The first Christian emperor of the Roman empire was "Constantine," although it should be noted that it took some time for official Christian policies to be implemented. </span>
Answer:
The rest of this section will be devoted to four types of fronts. Three of these fronts move and one is stationary. With cold fronts and warm fronts, the air mass at the leading edge of the front gives the front its name. In other words, a cold front is right at the leading edge of moving cold air and a warm front marks the leading edge of moving warm air.
When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating a low pressure zone. If the lifted air is moist, there will be condensation and precipitation. Winds are common at a front. The greater the temperature difference between the two air masses, the stronger the winds will be. Fronts are the main cause of stormy weather.
hope this helps lol :)
There are many countries that participate.
It's a lot to list so if you go to Maps of World 2016 Summer Olympics Participating Countries, you can see all recent countries that participated. This way you can also give credit to that site.
