Not until the nineteenth century did a sufficiently high level of interaction develop for the concept of a global system to be very useful. как перевести не в переводчике?

Пока девятнадцатый век не достиг достаточно высокого уровня взаимопроникающего развития идея глобальной системы популярна.

Здравствуй,моя любимая подруга(ее имя).Со вчерашнего дня у меня появилось новое занятие.Мне кажется,что оно стало меня интересовать больше предыдущего.А именно этот спорт называется воллейбол.Он более подвижный,веселый и командный.Я счастлива,что выбрала именно этот спорт.И хотела тебя пригласить на наши соревнования,которые будут на следующей неделе в пятницу в 16:00.ты придешь ?

Hello,my dear friend.Yesterday I had a new occupation.It seems to me that it began to interest me more than the previous.And it is this sport called volleyball.It is more agile,fun and friendly.I am happy that I chose this sport.And wanted to invite you to our competitions which will be held next week on Friday at 16:00.will you come ?

(адрес справа в верхнем углу)
46 Riverview Park
New York 542210USA
15th March, 2016

Dear John,
How are you? Everything is fine with me I haven't written for a while but I've been realy busy! Are you preparing for Christmas? Have you already bought gifts for your family? What about me I recently went shopping. It takes me a lot of time. I bought a T-shirt for my brother and a vase for my mother because her last vase was broken by cat. I have no idea what can I to present to my father. A seller advised to buy a cap, but I not sure about it. Also I bought smth to you. If you haven't bought presents and don't know what to buy we'll go shopping together.
Take care of yourself.
Best wishes,
Nick.